title: Subgroup analysis and statistical power.
authors.forename: Wellington P
authors.initials: WP
authors.lastname: Martins
authors.forename: José Vitor C
authors.initials: JV
authors.lastname: Zanardi
mesh_terms: D002584:Cervix Uteri / Q000187:drug effects*; D005260:Female; D006801:Humans; D015907:Hysteroscopy; D016595:Misoprostol / Q000008:administration & dosage*; D010120:Oxytocics / Q000008:administration & dosage*
chemical_list: D010120:Oxytocics; D016595:Misoprostol