{"title":"[Trends in the prevalence of malaria and anemia at delivery in Libreville from 1995 to 2011].","authors":"Marielle Karine Bouyou-Akotet, Solange Nzenze-Afène, Denise Patricia Mawili-Mboumba, Mathieu Owono-Medang, Vincent Guiyedi, Maryvonne Kombila","doi":"10.1684/san.2011.0266","DOIUrl":"https://doi.org/10.1684/san.2011.0266","url":null,"abstract":"<p><p>In 1995, 2005 and 2011, cross-sectional studies of 611 parturients at the Centre Hospitalier de Libreville in Gabon assessed the prevalence of maternal malaria and anaemia; two indicators of poor pregnancy outcomes. The prevalence of Plasmodium falciparum infection in maternal peripheral blood decreased from 25% in 2005 to 6% in 2011. Parasite density was significantly lower in 2005 (31 p/μL) than in 1995 (1,240 p/μL) or 2011 (35,055 p/μL). Anaemia prevalence was high (>50%) in 1995 and in 2005, but fell by more than 50% (24%) in 2011. After implementation of new malaria prevention strategies during pregnancy, the prevalence of both maternal peripheral P. falciparum infection and anaemia fell. Studies are necessary to assess the efficacy of these strategies and to seek other causes of anaemia.</p>","PeriodicalId":79375,"journal":{"name":"Sante (Montrouge, France)","volume":"21 4","pages":"199-203"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1684/san.2011.0266","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30482714","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}
Jean-Bernard Lekana-Douki, Julie Pontarollo, Rafika Zatra, Fousseyni S Toure-Ndouo
{"title":"[Malaria in Gabon: results of a clinical and laboratory study at the Chinese-Gabonese Friendship Hospital of Franceville].","authors":"Jean-Bernard Lekana-Douki, Julie Pontarollo, Rafika Zatra, Fousseyni S Toure-Ndouo","doi":"10.1684/san.2011.0263","DOIUrl":"https://doi.org/10.1684/san.2011.0263","url":null,"abstract":"<p><p>Despite progress in the control of malaria, it remains a serious public health problem. Substantial declines in malaria transmission, morbidity and mortality have nonetheless been reported in several countries where new malaria control strategies have been implemented. We conducted this molecular and epidemiological analysis of malaria in the pediatric department of the Chinese-Gabon Friendship Hospital (HCGC) in Franceville in 2010. Franceville is the third largest town in Gabon, and malaria transmission is high year-round. We included 945 children, 756 of them febrile. Malaria was diagnosed based on the detection of P. falciparum in thick blood films, with Lambarene's method. Malaria prevalence among the febrile children included in this study was 17.9% (n=135). The burden of malaria is thus lower than in the past; it is now the second leading cause of pediatric hospital visits, rather than the leading cause as it was in 2004. The children's mean age was 48.5 ± 3.9 months, older than in 2004 (p<0.05). We also analysed the molecular drug resistance marker, Pfmdr1. The prevalence of the wild-type genotype N86 of Pfmdr1 was 47.4% (n=64), higher than in 2004 (p<0.001). The increased prevalence of codon 1246 was not significant. Socio-economic factors and known malaria risk factors were analysed. We found that the use of Insecticide-treated mosquito nets and the provision of information (education or communication) to parents and guardians about malaria were protective factors against the disease. In conclusion, a larger study of the entire region over a longer period is necessary to characterise malaria in Franceville today. Transmission factors must also be studied.</p>","PeriodicalId":79375,"journal":{"name":"Sante (Montrouge, France)","volume":"21 4","pages":"193-8"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1684/san.2011.0263","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30483573","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}
{"title":"[Cannabis use in a central region of Tunisia].","authors":"Hajer Mabrouk, Haithem Mechria, Anwar Mechri, Wahiba Douki, Lotfi Gaha, Mohamed Fadhel Najjar","doi":"10.1684/san.2011.0274","DOIUrl":"https://doi.org/10.1684/san.2011.0274","url":null,"abstract":"<p><strong>Objective: </strong>The objective of this study was to determine the sociodemographic characteristics of cannabis users, their consumption patterns, and effects.</p><p><strong>Methods: </strong>Our cross-sectional, descriptive study included 205 subjects (191 men, 14 women, mean age = 25.9 ± 7.9 years). The consumption of psychotropic drugs and/or cannabis was confirmed by toxicological analysis.</p><p><strong>Results: </strong>In our study population, 61% were cannabis users. Consumption was significantly higher in males (94.4%) than in females. Consumers were young adults, aged 25.8 ± 8.8 years, single (81.6%), had primary school educations (62.4%), were employed (72%) and lived in urban areas (77.6%); 28.8% had a personal history of psychiatric disorders. The mean age of first cannabis use was 20 years. Cannabis use was frequently associated with consumption of alcohol and tobacco (72%). Forty percent of consumers used cannabis daily. Most of those who had used drugs had done so with friends. In most cases, cannabis was regarded as a means of escape from problems (29.3%), relaxation (20.2%), experimentation (18.2%) and a source of pleasure (16.7%).</p><p><strong>Conclusion: </strong>These data suggest the importance of primary prevention of early use and rapid treatment of young users.</p>","PeriodicalId":79375,"journal":{"name":"Sante (Montrouge, France)","volume":" ","pages":"233-9"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1684/san.2011.0274","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40155976","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}
Olivier Pambou, François Coulon, Christine Neveu, Ali Tadjerouni, Sylvain Tribalat
{"title":"[Controlling caesarean-site infection. Collaboration between the obstetric and hospital hygiene departments].","authors":"Olivier Pambou, François Coulon, Christine Neveu, Ali Tadjerouni, Sylvain Tribalat","doi":"10.1684/san.2011.0276","DOIUrl":"https://doi.org/10.1684/san.2011.0276","url":null,"abstract":"<p><strong>Unlabelled: </strong>In 1998, the isolation of Staphylococcus aureus resistant to methicillin (MRSA) from a sample taken from a post-caesarean surgical site infection (SSI) led the obstetrics department to call upon the hospital hygiene team for assistance. A retrospective investigation of incidence in the files of 24 women with caesarean deliveries showed a SSI rate of 24%. These abnormally high figures led to an audit of hygiene practices during these deliveries.</p><p><strong>Objectives: </strong>To reduce the incidence of post-caesarean SSIs at Dreux Hospital Centre.</p><p><strong>Materials and methods: </strong>From 1999 through 2005, SSIs have been monitored according to the methods of the western France Coordinating Centre for Nosocomial Infections and the guidelines of ANAES in France and the U.S. CDC. The data were analysed by Epi Info 6, retrospectively.</p><p><strong>Results: </strong>Files of 1972 caesareans performed over a 6-year period were analysed. The SSI rate was 24% in 1999; it fell to 7.4% in 2000 and stabilized from 2003 through 2005 in the neighbourhood of 2.6%. More than 70% of our patients are re-examined within 2 weeks of delivery.</p><p><strong>Conclusion: </strong>Close cooperation between the Obstetrics and Hospital Hygiene departments led to a dramatic reduction in SSI rates, to 2.6% (similar to the national rate), and its maintenance over a 3-year period. Implementation of the caesarean hygiene protocol has continued since 2006.</p>","PeriodicalId":79375,"journal":{"name":"Sante (Montrouge, France)","volume":" ","pages":"205-8"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1684/san.2011.0276","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40156029","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}
{"title":"[Medical audit of neonatal deaths with the \"three delay\" model in a pediatric hospital in Ouagadougou].","authors":"Fla Kouéta, Solange Odile Ouédraogo Yugbaré, Lassina Dao, Fousséni Dao, Diarra Yé, Kobena Ludovic Kam","doi":"10.1684/san.2011.0271","DOIUrl":"https://doi.org/10.1684/san.2011.0271","url":null,"abstract":"<p><strong>Objective: </strong>To determine the causes of neonatal deaths and their contributing factors.</p><p><strong>Material and methods: </strong>We used the \"three-delay model\" to conduct an audit of the neonatal deaths that occurred between January 2006 and December 2010 at the Charles de Gaulle University Pediatric Hospital, in Ouagadougou.</p><p><strong>Results: </strong>The neonatal mortality rate was 12.3%. The main direct causes were infections (70%), cerebral distress (10%), respiratory distress (7%), congenital malformations (5.5%), prematurity (4.5%) and hemorrhagic syndromes (3%). All three delays were found: in decision making in 64.4% of cases, in access to health services in 77%, and in receiving appropriate care in 66.9%; they multiplied the risk of death by a factor of 4, 3 and 5, respectively.</p><p><strong>Conclusion: </strong>To reduce deaths of newborn babies, it is necessary to overcome the three delays that contribute to it, pending the improvement of socioeconomic conditions of populations. This combat requires optimizing the implementation of the subsidies for obstetric and neonatal emergency care and strengthening the involvement of all stakeholders, specifically, policy makers, the community and health professionals.</p>","PeriodicalId":79375,"journal":{"name":"Sante (Montrouge, France)","volume":" ","pages":"209-14"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1684/san.2011.0271","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40155969","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}
Romuald Dassé Séry, Koffi N'guessan, Paul Akré Dagra, Rita Yao, François Sombo Mambo
{"title":"[Pulmonary events induced by non-steroidal anti-inflammatory drugs in patients with sickle cell disease].","authors":"Romuald Dassé Séry, Koffi N'guessan, Paul Akré Dagra, Rita Yao, François Sombo Mambo","doi":"10.1684/san.2011.0270","DOIUrl":"https://doi.org/10.1684/san.2011.0270","url":null,"abstract":"<p><p>Painful sickle cell crises are among the principal manifestations of sickle cell disease. Their treatment routinely requires the use of non-steroidal anti-inflammatory drugs (NSAIDS). These drugs also, however, inhibit the cyclooxygenase cycle in arachidonic acid metabolism, promoting the synthesis of leukotrienes, which have bronchoconstrictive effects. This study took place from March through August, 2007, and included 100 patients of both sexes, aged 2 to 59 years, with any sickle cell phenotype (SS, SC, AS, SFA2, or SAFA2) and treated by NSAIDs in the Immunology and Haematology department of the University Hospital of Cocody. We analysed the characteristics of the respiratory events induced by taking NSAIDs to identify potential risk factors for their occurrence. We found that 5% of these patients presented respiratory symptoms linked to NSAIDs. These appeared within 30 minutes of drug intake for 80%; in 60% of these cases, only corticosteroid and antihistamine treatment resolved these symptoms. The occurrence of respiratory events did not differ by sex; however, younger subjects were more exposed to these respiratory events. All patients with family or individual history of atopy-like hypersensitivity type I events presented these respiratory symptoms when taking NSAIDS for sickle-cell crises.</p>","PeriodicalId":79375,"journal":{"name":"Sante (Montrouge, France)","volume":"21 4","pages":"187-91"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1684/san.2011.0270","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30482524","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}
Jérôme Miloundja, Jules Samuel Bamba, John Florent Mouba, Thimothée Ella Ondo, Lucien Mwanyombet, Jean Marcel Mandji Lawson, Léon N'zouba
{"title":"[Cranioencephalic complications of bacterial sinusitis in children and adolescents: eight cases in Libreville (Gabon)].","authors":"Jérôme Miloundja, Jules Samuel Bamba, John Florent Mouba, Thimothée Ella Ondo, Lucien Mwanyombet, Jean Marcel Mandji Lawson, Léon N'zouba","doi":"10.1684/san.2011.0275","DOIUrl":"https://doi.org/10.1684/san.2011.0275","url":null,"abstract":"<p><strong>Objective: </strong>To review the pathologic, diagnostic and therapeutic aspects of the cranioencephalic complications of bacterial sinusitis.</p><p><strong>Material and methods: </strong>This retrospective study included children who underwent diagnostic imaging at the Omar Bongo Ondimba military hospital between January 2006 and December 2010 and treatment of cranioencephalic complications of sinusitis.</p><p><strong>Results: </strong>During the study period, 58 children were hospitalized with sinusitis, and eight (13.8%) had cranioencephalic complications for an annual incidence of 1.6% and a sex ratio of 5 boys to 3 girls. Their mean age was 13 years. Symptoms developed over a mean duration of 14 days (range: 3-45 days). The clinical picture was dominated by febrile headaches and neurologic signs. Palpation of the sinus pressure points was painful in all cases. Disorders of consciousness were found in five cases, with a mean Glasgow score of 9 (range: 7-13). Seven children had multifocal sinusitis and one frontal sinusitis. Five children had a subdural empyema, two associated with thrombophlebitis of the sagittal sinus, one with a brain abscess with thrombophlebitis of the sagittal sinus, and another with meningitis and thrombophlebitis of the sagittal sinus. Two children had osteomyelitis of the frontal sinus table, including a frontal lobe abscess for one. Another had multiple cerebral abscesses. Five children had sinus and neurosurgical drainage, two sinus drainage only, and one neurosurgical drainage only. Microbiology was positive for microbes in four cases: Streptococcus eqinus (one case), Staphylococcus aureus (one case), both S. pneumoniae and Haemophilus influenzae (one case), and Aerococcus viridans (one case). Outcome was favourable in seven cases, including four without sequelae. Two children had recurrences, and one died.</p><p><strong>Conclusion: </strong>Diagnosis of the cranioencephalic complications of sinusitis rely on medical imagery. Early multidisciplinary therapeutic management is essential.</p>","PeriodicalId":79375,"journal":{"name":"Sante (Montrouge, France)","volume":"21 4","pages":"215-20"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1684/san.2011.0275","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30459577","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}
{"title":"[Factors associated with overweight and obesity in children in Ouagadougou (Burkina Faso)].","authors":"Fla Kouéta, Lassina Dao, Fousséni Dao, Scolastique Djekompté, Justin Sawadogo, Yé Diarra, Kobena Ludovic Kam, Alphonse Sawadogo","doi":"10.1684/san.2011.0272","DOIUrl":"https://doi.org/10.1684/san.2011.0272","url":null,"abstract":"<p><strong>Introduction: </strong>The international community is increasing concerned about obesity, which it has become one of the most common noninfectious pandemics worldwide and affects a growing number of children.</p><p><strong>Material and methods: </strong>We conducted an analytic cross-sectional study from May 25 to June 16, 2010, among a sample of 435 randomly selected students in secondary schools in the city of Ouagadougou to identify the factors contributing to obesity and overweight.</p><p><strong>Results: </strong>The main factors significantly associated with obesity and overweight were family history of obesity (OR = 7.4), higher socioeconomic level (OR = 3.8), snacking on candy (OR = 5, 3), pastry (OR = 3.5), and chocolate (OR = 12.6), frequent consumption of sweets (OR = 2.2), lack of physical activity (OR = 4.4), and conflictual family relationships (OR = 3.9).</p><p><strong>Conclusion: </strong>Dealing with these factors in prevention activities should help to reduce the prevalence of overweight and obesity and their morbid consequences later on.</p>","PeriodicalId":79375,"journal":{"name":"Sante (Montrouge, France)","volume":" ","pages":"227-31"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1684/san.2011.0272","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40155974","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}
{"title":"[Epidemiology, microbiology, and outcomes of septicemia in children treated at the Charles de Gaulle University Pediatric Hospital in Burkina Faso].","authors":"Abdoul-Salam Ouédraogo, Aimée Dakouré-Kissou, Gandaaza Euthyme Armel Poda, Fla Koueta, Diarra Yé-Ouattara, Rasmata Ouédraogo-Traoré","doi":"10.1684/san.2011.0273","DOIUrl":"https://doi.org/10.1684/san.2011.0273","url":null,"abstract":"<p><p>The aim of this study is to describe the epidemiological and microbiological characteristics and outcome of children with septicemia at the Charles de Gaulle University Pediatric Hospital of Ouagadougou to help improve probabilistic antibiotic therapy in this type of infection. This retrospective descriptive study covered all the children from 0 to 15 years old seen over a period of 7 years in any hospital department with suspected bacteriemia and for whom the bacteriology laboratory performed a blood culture. During the study period, the laboratory received 842 requests for blood cultures and found 154 (18.3%) of them to be positive. Files for 81 of the 154 patients could be found and examined. The distribution according to age showed septicemia was most frequent among those aged 6-15 years (61.7% of the cases). Microbial identification showed the dominant species to be Salmonella enterica (serovars paratyphi and typhi) (58%) followed by Staphylococcus aureus (12.3%). The salmonella isolates had a high rate of resistance to amoxicillin, chloramphenicol and cotrimoxazole. Staphylococci were always sensitive to the antibiotics with which they were tested, although to a lesser extent for penicillin G. All patients routinely received antibiotic treatment, and 81.5% (n=66) were cured (5 children died and 10 left the hospital against medical advice). This study shows that the bacterial epidemiology of septicemia in our setting is dominated by salmonella. Trends in bacterial resistance to antibiotics showed that common antibiotics such as amoxicillin and cotrimoxazole are no longer acceptable as probabilist therapy here. They should be replaced in this type of infection by injectable third generation cephalosporin alone or combined with aminoglycosides.</p>","PeriodicalId":79375,"journal":{"name":"Sante (Montrouge, France)","volume":" ","pages":"221-5"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1684/san.2011.0273","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40155973","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}
{"title":"[Diffuse cervico-facial cellulitis: 32 cases in Libreville].","authors":"Jérôme Miloundja, Suzy Flore Assini Eyogho, Jean Marcel Mandji Lawson, Magloire Ondounda, Jean Sylvain Koumba, Pierrette Lekassa, Marguerite Inibend, Léon N'zouba","doi":"10.1684/san.2011.0256","DOIUrl":"https://doi.org/10.1684/san.2011.0256","url":null,"abstract":"<p><strong>Objective: </strong>The aim of this study was to analyze the predisposing factors and the diagnostic and therapeutic aspects of diffuse cervico-facial cellulitis.</p><p><strong>Material and methods: </strong>This retrospective study examined the records of all 32 patients admitted to the ENT and cervico-facial department of the Omar Bongo Ondimba Army Teaching Hospital in Libreville with diffuse cervico-facial cellulitis, from January 2006 through December 2010.</p><p><strong>Results: </strong>The study included 18 women (56%) and 14 men (44%) with a mean age of 28 years. At admission, 28 patients (87.5%) had already received anti-inflammatory drugs and 25 (78%) one or more antibiotics. Two patients were HIV+. The main route was dental for 21 patients (66%), tonsillar for 4 (13%), submandibular for 2 (6%), parotid for 2 cases (6%), cutaneous for 1 (3%) and unspecified in 2 more (6%). The cellulitis was pseudo-phlegmonous in 24 patients (75%) and gangrenous in 8 cases (25%). It extended to the mediastinum in six patients (19%). The bacteriological study, carried out in 24 cases (75%), found 14 cases of aerobic germs. Medical or medical and surgical treatment led to cure for 30 patients (94%). Two patients (6%) died.</p><p><strong>Conclusion: </strong>Treatment of cervico-facial cellulitis must be early and multidisciplinary. Self-medication with anti-inflammatory drugs for bucco-pharyngeal infections without appropriate antibiotic treatment is the principal predisposing factor.</p>","PeriodicalId":79375,"journal":{"name":"Sante (Montrouge, France)","volume":"21 3","pages":"153-7"},"PeriodicalIF":0.0,"publicationDate":"2011-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1684/san.2011.0256","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"30428118","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}