Tehran University of Medical Sciences Iranian Journal of Public Health 2251-6085 45 4 2016 04 27 542 543 Mingdong HUO Dept. of Anorectal Diseases, Zhongda Hospital, Southeast University, Nanjing, Jiangsu, China Bo ZHANG Dept. of Anorectal Diseases, Zhongda Hospital, Southeast University, Nanjing, Jiangsu, China Shuqing DING National Chinese Medical Center of Colorectal Diseases, the Third Affiliated Hospital of Nanjing University of Traditional Chinese Medicine, Nanjing, Jiangsu, China Yijiang DING National Chinese Medical Center of Colorectal Diseases, the Third Affiliated Hospital of Nanjing University of Traditional Chinese Medicine, Nanjing, Jiangsu, China Yugen CHEN Nanjing University of Traditional Chinese Medicine, Nanjing, Jiangsu, China 2016 05 08 2016 05 08 No Abstract. https://ijph.tums.ac.ir/index.php/ijph/article/view/6654 https://ijph.tums.ac.ir/index.php/ijph/article/download/6654/5381