title: [Application of 'stepped-wedge design' methodology in randomized controlled trials].
authors.affiliation: Department of Epidemiology and Biostatistics, Peking University Health Science Center, Beijing 100191, China.
authors.forename: Zu-yao
authors.initials: ZY
authors.lastname: Yang
authors.forename: Si-yan
authors.initials: SY
authors.lastname: Zhan
mesh_terms: D016032:Randomized Controlled Trials as Topic; D012107:Research Design