title: RE: "COMPARISON OF STATISTICAL APPROACHES FOR DEALING WITH IMMORTAL TIME BIAS IN DRUG EFFECTIVENESS STUDIES".
authors.affiliation: Institute for Medical Biometry and Statistics, Faculty of Medicine and Medical Center, University of Freiburg, Freiburg, Germany.
authors.forename: Martin
authors.initials: M
authors.lastname: Wolkewitz
authors.affiliation: Institute of Statistics, Ulm University, Ulm, Germany.
authors.forename: Jan
authors.initials: J
authors.lastname: Beyersmann
authors.affiliation: Institute for Medical Biometry and Statistics, Faculty of Medicine and Medical Center, University of Freiburg, Freiburg, Germany.
authors.forename: Kristin
authors.initials: K
authors.lastname: Ohneberg
authors.affiliation: Institute for Medical Biometry and Statistics, Faculty of Medicine and Medical Center, University of Freiburg, Freiburg, Germany.
authors.forename: Martin
authors.initials: M
authors.lastname: Schumacher
mesh_terms: D015982:Bias; D001699:Biometry; D006801:Humans; D012106:Research; D013997:Time Factors