Parsa Asachi, Ghadi Ghanem, Jason Burton, Haig Aintablian, Alan Chiem
{"title":"Correction: Utility of ultrasound in managing acute medical conditions in space: a scoping review.","authors":"Parsa Asachi, Ghadi Ghanem, Jason Burton, Haig Aintablian, Alan Chiem","doi":"10.1186/s13089-023-00353-2","DOIUrl":"10.1186/s13089-023-00353-2","url":null,"abstract":"","PeriodicalId":36911,"journal":{"name":"Ultrasound Journal","volume":"16 1","pages":"2"},"PeriodicalIF":3.4,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10784237/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139418247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Søren Helbo Skaarup, Peter Juhl-Olsen, Anne Sofie Grundahl, Brian Bridal Løgstrup
{"title":"Replacement of fluoroscopy by ultrasonography in the evaluation of hemidiaphragm function, an exploratory prospective study.","authors":"Søren Helbo Skaarup, Peter Juhl-Olsen, Anne Sofie Grundahl, Brian Bridal Løgstrup","doi":"10.1186/s13089-023-00355-0","DOIUrl":"10.1186/s13089-023-00355-0","url":null,"abstract":"<p><strong>Introduction: </strong>Dysfunction of the diaphragm may ultimately lead to respiratory insufficiency and compromise patient outcome. Evaluation of diaphragm function is cumbersome. Fluoroscopy has been the gold standard to measure diaphragmatic excursion. Ultrasonography can visualize diaphragm excursion and holds many advantages such as no radiation exposure, increased portability and accessibility. However, correlation between fluoroscopy and ultrasonography has never been studied. We aimed to compare fluoroscopic and ultrasound measures of diaphragm excursion to determine if ultrasonography can replace fluoroscopy.</p><p><strong>Methods: </strong>We performed ultrasound and fluoroscopy simultaneously during sniff inspiration and at total inspiratory capacity in patients with chronic obstructive pulmonary disease, heart failure and in healthy volunteers. Cranio-caudal excursion was measured by fluoroscopy and compared directly to M-mode excursion, B-mode excursion, area change, resting thickness, thickening fraction and contraction velocity measured by ultrasonography.</p><p><strong>Results: </strong>Forty-two participants were included. The Pearson correlation between M-mode and fluoroscopy excursion was 0.61. The slope was 0.9 (90%CI 0.76-1.04) in a regression analysis. Using the Bland-Altman method, the bias was - 0.39 cm (95% CI - 1.04-0.26), p = 0.24. The Pearson correlation between fluoroscopy and B-mode and area change ultrasonography was high; low for thickness and fraction. All correlations were lower during sniff inspiration compared with inspiratory capacity breathing.</p><p><strong>Conclusion: </strong>Ultrasonography has an acceptable correlation and bias compared to fluoroscopy and can thus be used as the primary tool to evaluate diaphragm excursion.</p>","PeriodicalId":36911,"journal":{"name":"Ultrasound Journal","volume":"16 1","pages":"1"},"PeriodicalIF":3.4,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10774234/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139378440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Optic nerve sheath diameter measurement for the paediatric patient with an acute deterioration in consciousness.","authors":"Ahmed Ali, David J McCreary","doi":"10.1186/s13089-023-00341-6","DOIUrl":"10.1186/s13089-023-00341-6","url":null,"abstract":"<p><p>Ocular Point of Care Ultrasound (PoCUS) is emerging as a valuable utility within emergency medicine. Optic nerve sheath diameter (ONSD) has been demonstrated to correlate closely with intracranial pressure (ICP) and an elevated measurement can detect raised ICP readily, where fundoscopy may not, owing to both technical challenges and insufficient clinical skills. A previously fit and well 10-year-old girl presented to the paediatric emergency department with worsening headache, fever and lethargy. On examination, her left pupil was large, and not reactive to light. Initially, her GCS was 15 but suddenly dropped to 8/15. Her blood tests showed raised inflammatory markers. A CT head was reported as possible pansinusitis and MRI of her brain was initially reported as showing evidence of meningeal irritation only. Due to her drop in GCS PoCUS of optic nerve sheath was conducted which showed evidence of increased ICP with increased optic nerve sheath diameter of 6.8mm. This led to a reassessment of the MRI imaging by the neurosurgical team who felt there was evidence of subdural empyema. The patient was transferred to the tertiary neurosurgical centre, where an emergency evacuation of subdural empyema was carried out. Staphylococcus aureus and Streptococcus pyogenes were grown from pus samples. Early detection of raised ICP is of paramount importance in terms of being able to instigate neuroprotective measures and prevent adverse neurological outcomes. PoCUS is a readily available, non-irradiating, easily repeatable, well-tolerated and readily teachable ultrasound modality and a useful tool which should be employed in paediatric and adult emergency departments.</p>","PeriodicalId":36911,"journal":{"name":"Ultrasound Journal","volume":"15 1","pages":"45"},"PeriodicalIF":3.4,"publicationDate":"2023-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10695894/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138483182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rajkumar Rajendram, Arif Hussain, Naveed Mahmood, Mubashar Kharal
{"title":"Correction: Feasibility of using a handheld ultrasound device to detect and characterize shunt and deep vein thrombosis in patients with COVID-19: an observational study.","authors":"Rajkumar Rajendram, Arif Hussain, Naveed Mahmood, Mubashar Kharal","doi":"10.1186/s13089-023-00342-5","DOIUrl":"10.1186/s13089-023-00342-5","url":null,"abstract":"","PeriodicalId":36911,"journal":{"name":"Ultrasound Journal","volume":"15 1","pages":"44"},"PeriodicalIF":3.4,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10667160/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138300237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mamdouh Souleymane, Rajkumar Rajendram, Naveed Mahmood, Amro M T Ghazi, Yousuf M S Kharal, Arif Hussain
{"title":"Correction: A survey demonstrating that the procedural experience of residents in internal medicine, critical care and emergency medicine is poor: training in ultrasound is required to rectify this.","authors":"Mamdouh Souleymane, Rajkumar Rajendram, Naveed Mahmood, Amro M T Ghazi, Yousuf M S Kharal, Arif Hussain","doi":"10.1186/s13089-023-00343-4","DOIUrl":"10.1186/s13089-023-00343-4","url":null,"abstract":"","PeriodicalId":36911,"journal":{"name":"Ultrasound Journal","volume":"15 1","pages":"43"},"PeriodicalIF":3.4,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10667180/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138300236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hope Werenski, Kristy Ford, Dillon Casey, Casey Glass, Jacob Schoeneck
{"title":"Abscess pulsatility: a sonographic sign of osteomyelitis.","authors":"Hope Werenski, Kristy Ford, Dillon Casey, Casey Glass, Jacob Schoeneck","doi":"10.1186/s13089-023-00339-0","DOIUrl":"10.1186/s13089-023-00339-0","url":null,"abstract":"<p><strong>Introduction: </strong>Early diagnosis and aggressive treatment of acute osteomyelitis may improve prognosis and prevent further complications. Sonography is useful in the evaluation of osteomyelitis. It can demonstrate early signs of inflammation, such as soft tissue changes near the affected bone, periosteal thickening, periosteal elevation, and subperiosteal abscess.</p><p><strong>Case presentation: </strong>A 68-year-old female presented to the emergency department with 3 weeks of worsening left lower extremity pain. She was initially seen by urgent care for left shin erythema and swelling and treated for cellulitis with intramuscular ceftriaxone without improvement. On presentation, she was afebrile and hemodynamically stable with erythema, swelling, and tenderness of the left pretibial soft tissues. Her labs revealed leukocytosis and elevated inflammatory markers. Point-of-care ultrasound demonstrated a bidirectional flow of fluid through a disruption in the bone cortex visualized on greyscale imaging and confirmed with color and spectral Doppler. The patient was diagnosed with osteomyelitis and treated with antibiotics and incision and drainage by orthopedic surgery.</p><p><strong>Discussion: </strong>The unique sonographic finding of pulsatile flow of fluid within an abscess near bone has not been previously described in the literature. The presence of Doppler signal in any fluid other than blood is known as pseudoflow. The presence of pulsatility in this case, which could represent either blood or pseudoflow, drew the ultrasound operator's eye to the cortical defect and lead to the diagnosis of osteomyelitis.</p><p><strong>Conclusions: </strong>The sonographic finding of pulsatility in an abscess near bone should raise the concern for communication with the medullary cavity.</p>","PeriodicalId":36911,"journal":{"name":"Ultrasound Journal","volume":"15 1","pages":"41"},"PeriodicalIF":3.4,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10547659/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41164918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Leila N Atmowihardjo, Job R Schippers, Mark E Haaksma, Marry R Smit, Harm J Bogaard, Leo Heunks, Nicole P Juffermans, Marcus J Schultz, Henrik Endeman, Patricia van Velzen, Pieter R Tuinman, Jurjan Aman, Lieuwe D J Bos
{"title":"The diagnostic accuracy of lung ultrasound to determine PiCCO-derived extravascular lung water in invasively ventilated patients with COVID-19 ARDS.","authors":"Leila N Atmowihardjo, Job R Schippers, Mark E Haaksma, Marry R Smit, Harm J Bogaard, Leo Heunks, Nicole P Juffermans, Marcus J Schultz, Henrik Endeman, Patricia van Velzen, Pieter R Tuinman, Jurjan Aman, Lieuwe D J Bos","doi":"10.1186/s13089-023-00340-7","DOIUrl":"10.1186/s13089-023-00340-7","url":null,"abstract":"<p><strong>Background: </strong>Lung ultrasound (LUS) can detect pulmonary edema and it is under consideration to be added to updated acute respiratory distress syndrome (ARDS) criteria. However, it remains uncertain whether different LUS scores can be used to quantify pulmonary edema in patient with ARDS.</p><p><strong>Objectives: </strong>This study examined the diagnostic accuracy of four LUS scores with the extravascular lung water index (EVLWi) assessed by transpulmonary thermodilution in patients with moderate-to-severe COVID-19 ARDS.</p><p><strong>Methods: </strong>In this predefined secondary analysis of a multicenter randomized-controlled trial (InventCOVID), patients were enrolled within 48 hours after intubation and underwent LUS and EVLWi measurement on the first and fourth day after enrolment. EVLWi and ∆EVLWi were used as reference standards. Two 12-region scores (global LUS and LUS-ARDS), an 8-region anterior-lateral score and a 4-region B-line score were used as index tests. Pearson correlation was performed and the area under the receiver operating characteristics curve (AUROCC) for severe pulmonary edema (EVLWi > 15 mL/kg) was calculated.</p><p><strong>Results: </strong>26 out of 30 patients (87%) had complete LUS and EVLWi measurements at time point 1 and 24 out of 29 patients (83%) at time point 2. The global LUS (r = 0.54), LUS-ARDS (r = 0.58) and anterior-lateral score (r = 0.54) correlated significantly with EVLWi, while the B-line score did not (r = 0.32). ∆global LUS (r = 0.49) and ∆anterior-lateral LUS (r = 0.52) correlated significantly with ∆EVLWi. AUROCC for EVLWi > 15 ml/kg was 0.73 for the global LUS, 0.79 for the anterior-lateral and 0.85 for the LUS-ARDS score.</p><p><strong>Conclusions: </strong>Overall, LUS demonstrated an acceptable diagnostic accuracy for detection of pulmonary edema in moderate-to-severe COVID-19 ARDS when compared with PICCO. For identifying patients at risk of severe pulmonary edema, an extended score considering pleural morphology may be of added value.</p><p><strong>Trial registration: </strong>ClinicalTrials.gov identifier NCT04794088, registered on 11 March 2021. European Clinical Trials Database number 2020-005447-23.</p>","PeriodicalId":36911,"journal":{"name":"Ultrasound Journal","volume":"15 1","pages":"40"},"PeriodicalIF":3.4,"publicationDate":"2023-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10545605/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41132219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Andrew Kamilaris, Jeffrey A Kramer, Gwen Baraniecki-Zwil, Frances Shofer, Christy Moore, Nova Panebianco, Wilma Chan
{"title":"Development of a novel observed structured clinical exam to assess clinical ultrasound proficiency in undergraduate medical education.","authors":"Andrew Kamilaris, Jeffrey A Kramer, Gwen Baraniecki-Zwil, Frances Shofer, Christy Moore, Nova Panebianco, Wilma Chan","doi":"10.1186/s13089-023-00337-2","DOIUrl":"10.1186/s13089-023-00337-2","url":null,"abstract":"<p><strong>Objectives: </strong>A pilot study was performed to develop and test an observed structured clinical exam (OSCE) for clinical ultrasound in second-year medical students. The goal was to assess a longitudinal clinical ultrasound curriculum for medical students and to help determine readiness to perform ultrasound during clinical clerkships.</p><p><strong>Methods: </strong>The OSCE contained 40 tasks over 30 min in a one-to-one examiner to examinee environment using standardized patients covering cardiac, pulmonary, and inferior vena cava (IVC) ultrasound exams along with 6 critical diagnoses. Examinees were assessed using a binary checklist approach. A two-way ANOVA analysis was performed to determine if there were differences between the day and session the OSCE was administered. Results are presented as mean ± standard deviation.</p><p><strong>Results: </strong>One hundred fifty-two students were tested with an overall mean score of 64.9 ± 17.6%. Scores between the cardiac, IVC, and lung sections varied-67.8% ± 18.8%, 62.4% ± 26.2%, and 57.1% ± 20.6%, respectively. One hundred twenty-six (82.9%) answered at least one critical diagnosis incorrectly. Students in the late session performed better than the early session (1: 60% vs 2: 69%, p = .001).</p><p><strong>Conclusions: </strong>Students performed better in later sessions. Additionally, the number of questions left blank at the end of the exam suggests that the length of the OSCE should be evaluated. Incorporating critical diagnoses was challenging for examinees. The proposed OSCE is a valuable assessment tool that could be adapted to assess student's readiness to use clinical ultrasound prior to clerkships.</p>","PeriodicalId":36911,"journal":{"name":"Ultrasound Journal","volume":"15 1","pages":"39"},"PeriodicalIF":3.4,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10519897/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41151390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Edith Elianna Rodríguez Aparicio, Jorge Armando Carrizosa Gonzalez, David Rene Rodriguez Lima
{"title":"Optic nerve sheath diameter at high altitude: standardized measures in healthy volunteers.","authors":"Edith Elianna Rodríguez Aparicio, Jorge Armando Carrizosa Gonzalez, David Rene Rodriguez Lima","doi":"10.1186/s13089-022-00295-1","DOIUrl":"https://doi.org/10.1186/s13089-022-00295-1","url":null,"abstract":"<p><strong>Background: </strong>Increases in the diameter of the optic nerve sheath (ONSD) on ultrasound are associated with high intracranial pressure (hICP). The normal value varies with altitude and the population studied. The objective of this study is to describe the normal values of the ONSD in a healthy adult population of the city of Bogotá, Colombia, at 2640 meters above sea level (masl).</p><p><strong>Patients and methods: </strong>A prospective observational study was conducted on a total of 247 healthy individuals recruited from May 2021 to May 2022 who were subjected to the color, low power, optic disk, safety, elevated frequency, dual (CLOSED) protocol for measuring the bilateral ONSD adjusted to the eyeball transverse diameter (ETD).</p><p><strong>Results: </strong>A total of 230 individuals were analyzed; the average ONSD of the right eye (RE) was 0.449 cm (range 0.288-0.7) and that of the left eye (LE) was 0.454 cm (range 0.285-0.698); the correlation between RE and LE was 0.93 (p < 0.005), and the correlation of the ONSD/ETD ratios for the RE and LE was lower (r<sup>2</sup> = 0.79, p < 0.005). A total of 10.8% of the studied population had values greater than 0.55 cm.</p><p><strong>Conclusions: </strong>The median ONSD and ONSD/ETD ratio in the city of Bogotá are similar to those described in other populations; however, approximately 10.8% of the healthy population may present higher values, which would limit the use of ONSD on its own for clinical decision-making, only repeated measurements with significant changes in the ONSD and ONSD/ETD or asymmetries between the measurements of both eyes linked to clinical findings would allow the diagnosis of hICP.</p>","PeriodicalId":36911,"journal":{"name":"Ultrasound Journal","volume":" ","pages":"46"},"PeriodicalIF":3.4,"publicationDate":"2022-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9674817/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40476350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Michal Maly, Masego Candy Mokotedi, Eva Svobodova, Marek Flaksa, Michal Otahal, Zdenek Stach, Jan Rulisek, Tomas Brozek, Michal Porizka, Martin Balik
{"title":"Interpleural location of chest drain on ultrasound excludes pneumothorax and associates with a low degree of chest drain foreshortening on the antero-posterior chest X-ray.","authors":"Michal Maly, Masego Candy Mokotedi, Eva Svobodova, Marek Flaksa, Michal Otahal, Zdenek Stach, Jan Rulisek, Tomas Brozek, Michal Porizka, Martin Balik","doi":"10.1186/s13089-022-00296-0","DOIUrl":"https://doi.org/10.1186/s13089-022-00296-0","url":null,"abstract":"<p><strong>Background: </strong>The role of chest drain (CD) location by bedside imaging methods in the diagnosis of pneumothorax has not been explored in a prospective study yet.</p><p><strong>Methods: </strong>Covid-19 ARDS patients with pneumothorax were prospectively monitored with chest ultrasound (CUS) and antero-posterior X-ray (CR) performed after drainage in the safe triangle. CD foreshortening was estimated as a decrease of chest drain index (CDI = length of CD in chest taken from CR/depth of insertion on CD scale + 5 cm). The angle of inclination of the CD was measured between the horizontal line and the CD at the point where it enters pleural space on CR.</p><p><strong>Results: </strong>Of the total 106 pneumothorax cases 80 patients had full lung expansion on CUS, the CD was located by CUS in 69 (86%), the CDI was 0.99 (0.88-1.06). 26 cases had a residual pneumothorax after drainage (24.5%), the CD was located by CUS in 31%, the CDI was 0.76 (0.6-0.93),p < 0.01. The risk ratio for a pneumothorax in a patient with not visible CD between the pleural layers on CUS and an associated low CDI on CR was 5.97, p˂0.0001. For the patients with a steep angle of inclination (> 50°) of the CD, the risk ratio for pneumothorax was not significant (p < 0.17). A continued air leak from the CD after drainage is related to the risk for a residual pneumothorax (RR 2.27, p = 0.003).</p><p><strong>Conclusion: </strong>Absence of a CD on CUS post drainage, low CDI on CR and continuous air leak significantly associate with residual occult pneumothorax which may evade diagnosis on an antero-posterior CR.</p>","PeriodicalId":36911,"journal":{"name":"Ultrasound Journal","volume":" ","pages":"45"},"PeriodicalIF":3.4,"publicationDate":"2022-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9670049/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40471639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}