[1] Johns Hopkins Ctr Neurogastroenterol, Baltimore, MD USA
[2] Beijing Univ Chinese Med, Sch Life Sci, Beijing, Peoples R China
[3] Dalian Med Univ, Affiliated Hosp 1, Coll Integrat Med, Dalian, Liaoning, Peoples R China
[4] Southern Med Univ, Nanfang Hosp, Guangzhou, Guangdong, Peoples R China
[5] Peoples Hosp Xinjiang Uyghur Autonomous Reg, Urumqi, Peoples R China