title: A common problem in designating studies: case control or cohort?
authors.forename: Oz
authors.initials: O
authors.lastname: Harmanli
mesh_terms: D016022:Case-Control Studies; D015331:Cohort Studies; D005260:Female; D006801:Humans; D007044:Hysterectomy / Q000379:methods; D012371:Robotics