title: Missing Data in Longitudinal Clinical Trials Part A: Design and Conceptual Issues.
authors.affiliation: Biostatistics and Department of Health Research and Policy, Stanford University School of Medicine.
authors.forename: Philip W
authors.initials: PW
authors.lastname: Lavori
authors.forename: C Hendricks
authors.initials: CH
authors.lastname: Brown
authors.forename: Naihua
authors.initials: N
authors.lastname: Duan
authors.forename: Robert D
authors.initials: RD
authors.lastname: Gibbons
authors.forename: Joel
authors.initials: J
authors.lastname: Greenhouse