title: Zelen design in randomized controlled clinical trials.
authors.affiliation: Department of Radiology, Charité-Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany.
authors.forename: Felicitas
authors.initials: F
authors.lastname: Richter
authors.forename: Marc
authors.initials: M
authors.lastname: Dewey
mesh_terms: D004621:Embolization, Therapeutic / Q000379:methods*; D006801:Humans; D008297:Male; D011470:Prostatic Hyperplasia / Q000628:therapy*; D020728:Transurethral Resection of Prostate