title: Case-control or cohort study?
authors.forename: Tamhane
authors.initials: T
authors.lastname: Ashutosh
authors.forename: Gerald
authors.initials: G
authors.lastname: McGwin
mesh_terms: D000925:Anticoagulants / Q000009:adverse effects*; D005260:Female; D006801:Humans; D007431:Intraoperative Complications / Q000139:chemically induced*; D008297:Male; D011183:Postoperative Complications / Q000139:chemically induced*; D057586:Vitreoretinal Surgery / Q000379:methods*; D014859:Warfarin / Q000009:adverse effects*
chemical_list: D000925:Anticoagulants; D014859:Warfarin