title: [Restoration of peristalsis in postcholecystectomy patient under self-controlled analgesia by extradural anesthesia]
authors.affiliation: The First Affiliated Hospital, College of Medical Sciences, Zhejiang University, Hangzhou 310003, China.
authors.forename: Yan-Feng
authors.initials: YF
authors.lastname: Zhou
authors.forename: Cai
authors.initials: C
authors.lastname: Chen
authors.forename: Qing-Lian
authors.initials: QL
authors.lastname: Chen