title: Comments on 'Twenty-five years of confirmatory adaptive designs: opportunities and pitfalls'.
authors.affiliation: Division of Biometrics I, OB/OTS/CDER, FDA, Silver Spring, MD, 20993, U.S.A.
authors.forename: H M J
authors.initials: HM
authors.lastname: Hung
authors.affiliation: Office of Biostatistics, OTS/CDER, FDA, Silver Spring, MD, 20993, U.S.A.
authors.forename: Sue-Jane
authors.initials: SJ
authors.lastname: Wang
authors.affiliation: Division of Biometrics I, OB/OTS/CDER, FDA, Silver Spring, MD, 20993, U.S.A.
authors.forename: John
authors.initials: J
authors.lastname: Lawrence
mesh_terms: D002986:Clinical Trials as Topic; D006801:Humans; D012107:Research Design; D018401:Sample Size