Wang L S, Zhu H M, Zhou D Y, Wang Y L, Zhang W D
Department of Gastroenterology, Shenzhen Municipal People's Hospital, Jinan University of Medical Sciences, Shenzhen 518020, Guangdong Province, China.
World J Gastroenterol. 2001 Jun;7(3):440-3. doi: 10.3748/wjg.v7.i3.440.