title: Dilemma of Cross-Over Trials and Their Impact on Benefit Assessment In Oncology.
authors.affiliation: Roche Pharma, Grenzach-Wyhlen, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Ruof
authors.affiliation: Roche Pharma, Grenzach-Wyhlen, Germany.
authors.forename: T R
authors.initials: TR
authors.lastname: Staab
authors.affiliation: nspm ltd, Meggen, Switzerland.
authors.forename: M
authors.initials: M
authors.lastname: Walter