title: Colonic transit time in patient with slow-transit constipation: comparison of radiopaque markers and barium suspension method.
authors.affiliation: Department of General Surgery, Beijing Chaoyang Hospital, Capital Medical University, No. 8 Gongtina Lu, Chaoyang District, Beijing 100020, PR China.
authors.forename: Hui-Min
authors.initials: HM
authors.lastname: Xu
authors.forename: Jia-Gang
authors.initials: JG
authors.lastname: Han
authors.forename: Ying
authors.initials: Y
authors.lastname: Na
authors.forename: Bo
authors.initials: B
authors.lastname: Zhao
authors.forename: Hua-Chong
authors.initials: HC
authors.lastname: Ma
authors.forename: Zhen-Jun
authors.initials: ZJ
authors.lastname: Wang