International Journal of Pregnancy & Child Birth最新文献

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Risk factors for spontaneous preterm deliveries above twenty-eight complete weeks of gestation 妊娠满 28 周以上自然早产的风险因素
International Journal of Pregnancy & Child Birth Pub Date : 2024-03-26 DOI: 10.15406/ipcb.2024.10.00307
E. Nkwabong, Yasmine Anique Mayo, Felicité Nguefack, F. Fouelifack
{"title":"Risk factors for spontaneous preterm deliveries above twenty-eight complete weeks of gestation","authors":"E. Nkwabong, Yasmine Anique Mayo, Felicité Nguefack, F. Fouelifack","doi":"10.15406/ipcb.2024.10.00307","DOIUrl":"https://doi.org/10.15406/ipcb.2024.10.00307","url":null,"abstract":"Purpose: To identify risk factors for spontaneous preterm delivery (SPD) given that it is associated with high neonatal morbidity and mortality. Material and methods: This case-control study was carried out between 1st February and 31st July 2021. Women who delivered spontaneously between 28 and ˂37 weeks (cases) or at ≥37 weeks (controls) were recruited. The main variables recorded included maternal age and parity, inter-pregnancy interval, if the pregnancy was intended, medical, obstetrical and family past-histories, gestational age at delivery, number of gestation and pathologies during current gestation. Fisher exact test, t-test and logistic regression were used for comparison. P<0.05 was considered statistically significant. Results: Our frequency of preterm delivery was 15.3% (116/759 births), with 9.9% (75/759) being SPD. Significant risk factors for SPD were premature rupture of membranes (aOR 19.96, 95%CI 11.04-45.82), inter-pregnancy interval ˃60 months (aOR 13.02, 95%CI 6.11-33.01), Nulliparity (aOR 10.21, 95%CI 5.72-21.31), 1st degree family history of SPD (aOR 7.73, 95%CI 1.54-11.39), malaria in the 3rd trimester (aOR 6.89, 95%CI 2.15-8.63), multiple pregnancies (aOR 6.43, 95%CI 3.21-9.79), severe anemia (Hb ˂6g/dl) in the 3rd trimester (aOR 5.73, 95%CI 2.04-10.60) and unintended pregnancies (aOR 2.44, 95%CI 1.98-7.88). Conclusion: Women with multiple or unintended pregnancies and those with the pre-gestational risk factors identified above should be well followed up during pregnancy to allow prevention, if not, early diagnosis of SPD. Moreover, prevention of the above-identified pathologies in pregnancy is mandatory if we want to reverse the rate of SPD","PeriodicalId":211817,"journal":{"name":"International Journal of Pregnancy &amp; Child Birth","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140378952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Policy on healthy practices to improve the nutritional status of children under 5 years of age 改善 5 岁以下儿童营养状况的健康做法政策
International Journal of Pregnancy &amp; Child Birth Pub Date : 2024-03-21 DOI: 10.15406/ipcb.2024.10.00306
Cardenas Macedo Gissela Giovanna, Jose Manuel Delgado Bardales
{"title":"Policy on healthy practices to improve the nutritional status of children under 5 years of age","authors":"Cardenas Macedo Gissela Giovanna, Jose Manuel Delgado Bardales","doi":"10.15406/ipcb.2024.10.00306","DOIUrl":"https://doi.org/10.15406/ipcb.2024.10.00306","url":null,"abstract":"In the jungle region of Peru, child malnutrition rates are still high, which is reflected in the lack of comprehensive policies that promote healthy feeding practices for children under 5 years of age. Therefore, there is little implementation of regional strategies to address nutritional problems in the child population. The objective was to evaluate the reality of a policy based on healthy practices to improve the nutritional status of children under 5 years of age in the region. The type of research was basic, the design was based on a systematic review based on previous studies, evaluations and data collected in the San Martín region. The population and sample were mothers of children under 5 years of age residing in the San Martín region, whose nutritional and feeding data were collected in studies and official records. A systematic review methodology was used to analyze the effectiveness of the regional policy on healthy practices. The instruments included databases, health records and evaluations of implemented programs. This review article examines the strategies, programs and outcomes of regional policy in order to evaluate their effectiveness in addressing malnutrition and improving the quality of life of children in this geographic area. Results, the healthy practices policy demonstrated a significant improvement in the nutritional status of children under 5 years of age in the San Martín region. A reduction in malnutrition rates and an increase in the adoption of healthier eating habits was observed. In conclusion, based on the articles reviewed, the implementation of a policy focused on healthy practices is successful in improving the nutritional status of children under 5 years of age in the San Martín region. Additionally, the importance of continuing to promote evidence-based interventions to address childhood malnutrition and promote appropriate eating habits from an early age is highlighted.","PeriodicalId":211817,"journal":{"name":"International Journal of Pregnancy &amp; Child Birth","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140387903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Matrix for understanding perinatal psychic processes mediated by assisted reproductive technology 了解以辅助生殖技术为媒介的围产期心理过程的矩阵
International Journal of Pregnancy &amp; Child Birth Pub Date : 2024-03-01 DOI: 10.15406/ipcb.2024.10.00305
Elizabeth Ormart, Fiorella Brunetti
{"title":"Matrix for understanding perinatal psychic processes mediated by assisted reproductive technology","authors":"Elizabeth Ormart, Fiorella Brunetti","doi":"10.15406/ipcb.2024.10.00305","DOIUrl":"https://doi.org/10.15406/ipcb.2024.10.00305","url":null,"abstract":"This writing is the product of more than fifteen years of clinical work with patients who attend to medically assisted reproduction treatments, including our own clinical cases and those of other colleagues. Some of them compiled in the book “Wishes, children, technologies”, others developed in writings of my authorship in recent years. This clinical material has allowed me to develop a matrix of understanding of the psychological processes that women undergo throughout reproductive treatments, which includes a series of losses that are added to the psychic processing that occurs in natural pregnancies. This general matrix serves as a compass to guide us around some common elements that usually appear in reproductive treatments that last years. Having an ethical horizon of promotion and protection of the right to mental health of women facing reproductive treatments, we propose an interdisciplinary approach to medically assisted reproduction processes with a privileged heeding to singularity","PeriodicalId":211817,"journal":{"name":"International Journal of Pregnancy &amp; Child Birth","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140280788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Paternal depression as an unrecognizable symptom by public policies and mental health 父亲抑郁症是公共政策和心理健康无法识别的症状
International Journal of Pregnancy &amp; Child Birth Pub Date : 2024-02-21 DOI: 10.15406/ipcb.2024.10.00304
Solange Frid Patricio
{"title":"Paternal depression as an unrecognizable symptom by public policies and mental health","authors":"Solange Frid Patricio","doi":"10.15406/ipcb.2024.10.00304","DOIUrl":"https://doi.org/10.15406/ipcb.2024.10.00304","url":null,"abstract":"This article presents recent discussions that point to typical symptoms of paternal depression, which compromise the mental health of men and those around them. But first, we problematize, in just one time, the place of man in contemporary times and the construction of naturalistic models of masculine, which imprison him in a restrictive and non-creative way. Then, we review recent studies on paternal depression, which point to the complex aspects that involve the dynamics of the marital, parental and relational relationship. Finally, we discuss directions for public policy actions that privilege men's mental health, particularly during parenting","PeriodicalId":211817,"journal":{"name":"International Journal of Pregnancy &amp; Child Birth","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140445072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ovarian artery Doppler velocimetry effects after myoinositol and lipoic acid therapy in PCOs patients 多囊卵巢综合征患者接受肌醇和硫辛酸治疗后的卵巢动脉多普勒测速效果
International Journal of Pregnancy &amp; Child Birth Pub Date : 2024-02-14 DOI: 10.15406/ipcb.2024.10.00303
Piazze Juan, Perruzza Marta, Donfrancesco Cristina, Rizzo Giuseppe
{"title":"Ovarian artery Doppler velocimetry effects after myoinositol and lipoic acid therapy in PCOs patients","authors":"Piazze Juan, Perruzza Marta, Donfrancesco Cristina, Rizzo Giuseppe","doi":"10.15406/ipcb.2024.10.00303","DOIUrl":"https://doi.org/10.15406/ipcb.2024.10.00303","url":null,"abstract":"Background: Polycistic ovary syndrome (PCOs) is one of the most common endocrine and metabolic disorders in premenopausal women. This is the second part of an extended report regarding the significant effects of the therapy based on an Alfa Lipoic Acid (ALA)/Myoinositol (Myo) combined drug on adnexal parameters, as assessed by ultrasound technique. Methods: A prospective cohort trial. Data regarded thirty four italian nulliparous women considered for the study, control cases were chosen from an initial group of sixty-nine healthy women group paired by age and nulliparous status. Patients underwent a Myoinositol plus ALA regimen twice a day in a continued fashion in a twenty four months period. Ultrasound examinations were coincident with the fifth day of menstrual period and were set as follows: Time 0 (first evaluation), Time 12 (after twelve months) and finally Time 24 (after 24 months). Results: The mean age was 31.4 years old. Results regarding any significant change in the endometrial width, number of follicles, and the ovarian volumes within the time of the trial, showed no significant changes in the intervals considered. Conversely, the parameters dealing with color Doppler velocimetry waves of the ovarian arteries showed a significant decreasing trend, considering the first values and after 12 and 24 months. Conclusions: Considering a consistent and significant decrease in ovarian arteries resistance, we may hypothesize that Inositol plus ALA therapy may block the vascular effects of hyperadrogenism, maybe playing a role in the anti oxidant and anti inflammatory pathways","PeriodicalId":211817,"journal":{"name":"International Journal of Pregnancy &amp; Child Birth","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140457334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Early postoperative mobilization of children undergoing cardiac surgery 接受心脏手术儿童的术后早期活动
International Journal of Pregnancy &amp; Child Birth Pub Date : 2024-01-30 DOI: 10.15406/ipcb.2024.10.00302
katia Assuilo Ortet
{"title":"Early postoperative mobilization of children undergoing cardiac surgery","authors":"katia Assuilo Ortet","doi":"10.15406/ipcb.2024.10.00302","DOIUrl":"https://doi.org/10.15406/ipcb.2024.10.00302","url":null,"abstract":"","PeriodicalId":211817,"journal":{"name":"International Journal of Pregnancy &amp; Child Birth","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140480520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
TELE-ANC model in public sector in India: a feasible option to sustain quality antenatal care 印度公共部门的 TELE-ANC 模式:持续提供优质产前护理的可行方案
International Journal of Pregnancy &amp; Child Birth Pub Date : 2023-09-22 DOI: 10.15406/ipcb.2023.09.00292
Radhika Aggarwal, Kiran Guleria, Arun Kr Sharma, H. Srivastava, Richa Aggarwal
{"title":"TELE-ANC model in public sector in India: a feasible option to sustain quality antenatal care","authors":"Radhika Aggarwal, Kiran Guleria, Arun Kr Sharma, H. Srivastava, Richa Aggarwal","doi":"10.15406/ipcb.2023.09.00292","DOIUrl":"https://doi.org/10.15406/ipcb.2023.09.00292","url":null,"abstract":"Introduction: Prenatal care is one of the most widely used preventive strategies in healthcare. Despite rapid advances in medical practice over a century, obstetric care remains ‘traditional’. It is resource intensive with heavy footfall in public sector antenatal OPD leading to compromise in quality of care. Therefore, hybrid ‘TELE-ANC model’ is a feasible option to sustain quality care in limited resource setting. We assessed feasibility of this model in reducing ‘in-person visits’ in terms of provider, process and recipient and determined barriers and facilitators to implementation and robustness of process in delivering the model. Methods: Single center prospective feasibility study, composed of 50 low-risk women within 20 weeks of pregnancy; recruited from outpatient obstetric department. Model had 5 in-person and 4 virtual visits. During in-person visits; history, general and systemic examination, ANC investigations and ultrasounds were done and clubbed; counseling and treatment were advised. During virtual visit, patients monitored blood pressure, pulse, weight and fetal movements at home. Pictures of prescription were sent on patients’ phones with records maintained by provider. Patients and provider filled detailed Satisfaction Performa after each virtual visit and last antenatal visit which were measured through Likert scale. Results: Each pregnant woman on an average made 5 physical and 5 virtual visits (one extra than proposed 4 in the model). Each patient saved approximately 10 productive hours and 700 Rupees during their antenatal period. Doctor was able to implement services readily. Adequacy to conduct virtual visits, successful decision making, technical issues faced, ease and safety of process and overall improvement in access to healthcare and positive change, demonstrates high levels of Provider satisfaction score of >80% overall. There was high patient satisfaction score of 80 to 90% in areas assessed i.e., satisfaction with the care received, doctor-patient rapport, knowledge about pregnancy, convenience of self-monitoring and ability to contact provider during emergencies. Nearing term, patients had satisfaction score of 85-90% overall in ability to express, continuation of visits post COVID, reduction in overall cost and time, desire for such a model in future and positive change. Minimal technological barriers were identified which did not adversely impact the quality of care. It is ‘Good’ in terms of its robustness. 96% of patients desired hybrid model as mode of future antenatal care. Discussion: Due to rapid increase in use of telehealth during COVID-19 pandemic, we were encouraged to test feasibility of a reduced in-person visit hybrid model; ‘The TELE-ANC model’ in a tertiary care public hospital. It is feasible in delivering an efficient antenatal care with additional advantages of lower cost, greater doctor-patient rapport, increased patient’s productivity, increased patient satisfaction, better continuity of care,","PeriodicalId":211817,"journal":{"name":"International Journal of Pregnancy &amp; Child Birth","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139337533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Perinatal outcome complicated by long chain fatty acid disorder: a case report 围生期结局并发长链脂肪酸紊乱1例
International Journal of Pregnancy &amp; Child Birth Pub Date : 2023-09-05 DOI: 10.15406/ipcb.2023.09.00291
Joshua M Samuel, Torrie Anderson, R. Johns, I. Benjamin, R. Bainbridge, K. Gaither
{"title":"Perinatal outcome complicated by long chain fatty acid disorder: a case report","authors":"Joshua M Samuel, Torrie Anderson, R. Johns, I. Benjamin, R. Bainbridge, K. Gaither","doi":"10.15406/ipcb.2023.09.00291","DOIUrl":"https://doi.org/10.15406/ipcb.2023.09.00291","url":null,"abstract":"","PeriodicalId":211817,"journal":{"name":"International Journal of Pregnancy &amp; Child Birth","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120907467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Infant mortality in tribal communities of a rural remote region in context of biomass fuel use 农村偏远地区部落社区在使用生物质燃料方面的婴儿死亡率
International Journal of Pregnancy &amp; Child Birth Pub Date : 2023-08-31 DOI: 10.15406/ipcb.2023.09.00290
Chhabra S, Rathod V
{"title":"Infant mortality in tribal communities of a rural remote region in context of biomass fuel use","authors":"Chhabra S, Rathod V","doi":"10.15406/ipcb.2023.09.00290","DOIUrl":"https://doi.org/10.15406/ipcb.2023.09.00290","url":null,"abstract":"Background: Infant mortality (IM) rates have fallen in many developing countries, but rates of fall have been low. Objective: Community based study was carried out to know about IM in context of biomass fuel use by remote rural communities. Material methods: After approval of institute’s ethics committee, study was conducted in 100 villages around the village with health facility, randomly divided into 50 study villages, sub divided into 40 where advocacy to prevent exposure from Biomass fuel was done, 10 in addition to advocacy, Chimneys were fixed on roofs of huts with no windows, biomass fuel used, 50 villages, (40 and 10 control villages), neither advocacy nor Chimneys. Results: In 40 study villages, 2700 pregnancies, 2431 (90.1%) live births were recorded, 5 (0.21%) infant deaths (ID) occurred, 2 (0.1%) of 1398 male live births, one preterm born had acute respiratory distress (ARD), other had pneumonia, 3 (0.3%) of 1033 female live births, one preterm born who had ARD, 2 septicaemia. Similarly 2700 pregnancies were recorded in 40 control villages and 2259 (83.7%) live births occurred with 11 (0.49%) ID, statistically significant difference (P value <0.0203), 4 (0.3%) of 1278 male live births, one born preterm, later had ARD, other pneumonia, 2 septicaemia, 7 (0.7%) of 981 female babies, statistically significant difference between male, female babies, 2 preterm born later had ARD, one had pneumonia, one diarrhoea dehydration, 2 septicaemia, in one cause was unknown. Conclusion: For wellbeing of every infant collective actions are needed, reducing biomass fuel effect also.","PeriodicalId":211817,"journal":{"name":"International Journal of Pregnancy &amp; Child Birth","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125561807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unexpecting: mental health after pregnancy loss (Miscarriage, trauma, and how healthcare providers contribute to disenfranchised grief) 意外:怀孕失败后的心理健康(流产,创伤,以及医疗服务提供者如何导致被剥夺权利的悲伤)
International Journal of Pregnancy &amp; Child Birth Pub Date : 2023-08-14 DOI: 10.15406/ipcb.2023.09.00289
M. Hawkins
{"title":"Unexpecting: mental health after pregnancy loss (Miscarriage, trauma, and how healthcare providers contribute to disenfranchised grief)","authors":"M. Hawkins","doi":"10.15406/ipcb.2023.09.00289","DOIUrl":"https://doi.org/10.15406/ipcb.2023.09.00289","url":null,"abstract":"Miscarriage affects millions of women annually. The frequency of which miscarriage occurs, and the ease associated with the medical management of miscarriage has meant that a miscarriage is now considered a common pregnancy complication.1 Due to the perceived simplicity in medical management during a miscarriage, providers often neglect the mental healthcare of the mother during such a traumatic loss.2 Healthcare should be all-encompassing, efficient, effective, and humanistic, guiding patients through their treatment with physical and mental care. The medicalized view of miscarriage does not consider the physiological and psychological trauma, grief, and distress experienced by women following a miscarriage.1,2 This article will show that depression and post-traumatic stress disorders (PTSD) are common after a miscarriage, particularly in a late miscarriage when a woman feels in the “safe” zone of her pregnancy journey and yet suddenly becomes unexpecting. This article will also highlight that during a miscarriage, regardless of gestational age, healthcare providers are adding to the trauma already experienced during the loss due to the lack of empathy and lack of supportive care provided.3 Additionally, this article explores what studies have concluded, that women going through a miscarriage believe that healthcare providers often lack acknowledgment of what the expecting mother is going through and healthcare providers fail to help with managing the distress and ongoing care needed following a miscarriage, contributing to disenfranchising the grief that occurs with pregnancy loss","PeriodicalId":211817,"journal":{"name":"International Journal of Pregnancy &amp; Child Birth","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133503797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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