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©2009 The WJG Press and Baishideng. All rights reserved.
World J Gastroenterol. Jun 14, 2009; 15(22): 2787-2793
Published online Jun 14, 2009. doi: 10.3748/wjg.15.2787
Published online Jun 14, 2009. doi: 10.3748/wjg.15.2787
Spatial distribution patterns of anorectal atresia/stenosis in China: Use of two-dimensional graph-theoretical clustering
Ping Yuan, Liang Qiao, Ying Han, Xiao-Xia Liu, Xun Zhang, Yi Cao, Department of Epidemiology, West China School of Public Health, Sichuan University, Chengdu 610041, Sichuan Province, China
Li Dai, Yan-Ping Wang, Guang-Xuan Zhou, Juan Liang, Jun Zhu, National Center for Birth Defects Monitoring, West China Second University Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
Author contributions: Yuan P, Qiao L and Zhu J designed the research; Yuan P, Qiao L, Dai L, Wang YP, Zhou GX, Han Y, Liu XX, Zhang X, Cao Y, and Liang J performed the research; Qiao L performed the analysis; Yuan P, Qiao L and Zhu J wrote the paper.
Correspondence to: Jun Zhu, Professor, National Center for Birth Defects Monitoring, West China Second University Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China. zhujun3@163.com
Telephone: +86-28-85503121
Fax: +86-28-85501386
Received: December 2, 2008
Revised: April 8, 2009
Accepted: April 15, 2009
Published online: June 14, 2009
Revised: April 8, 2009
Accepted: April 15, 2009
Published online: June 14, 2009
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