Slow Transit Constipation

• Bishan Hospital of Chongqing — Bishan, Chongqing Municipality, China
• the People's Hospital of HeChuan Chongqing — Hechuan, Chongqing Municipality, China
• Shapingba Hospital, Chongqing University — Shapingba, Chongqing Municipality, China
• The Chenjiaqiao Hospital of ShaPingba District of Chongqing — Shapingba, Chongqing Municipality, China

• University Hospital Erlangen, Pediatric Surgery — Erlangen, Bavaria, Germany

Not specified

• Faculty of Medicine Siriraj Hospital, Mahidol University — Bangkoknoi, Bangkok, Thailand

• Department of Generay Surgery, Jinling hosptal, Medical School of Nanjing University — Nanjing, Jiangsu, China

• Army Medical Center (Daping Hospital) — Yuzhong, Chongqing Municipality, China
• No. 940 Hospital of Joint Logistics Support Force of Chinese People's Liberation Army — Lanzhou, Gansu, China
• Renmin Hospital of Wuhan University — Wuhan, Hubei, China
• Zhongnan Hospital of Wuhan University — Wuhan, Hubei, China