title: Pitfalls of retrospective and nonrandomized comparison of treatment modalities.
authors.forename: Ajay P
authors.initials: AP
authors.lastname: Sandhu
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology / Q000628:therapy*; D006801:Humans; D008297:Male; D009362:Neoplasm Metastasis; D009367:Neoplasm Staging; D011468:Prostatectomy; D011471:Prostatic Neoplasms / Q000473:pathology / Q000628:therapy*; D050397:Radiotherapy, Intensity-Modulated; D012107:Research Design; D016879:Salvage Therapy