title: [How to distinguish 2-phase (sequential) steroid contraceptives].
mesh_terms: D003276:Contraceptives, Oral / Q000592:standards*; D003279:Contraceptives, Oral, Sequential / Q000008:administration & dosage / Q000592:standards*; D003604:Czechoslovakia; D005260:Female; D006801:Humans
chemical_list: D003276:Contraceptives, Oral; D003279:Contraceptives, Oral, Sequential
vernacular_title: Jak rozlisovat dvoufázová (sekvencní) steroidní kontraceptiva.