title: Synthetic oestrogenic substances; a comparative study on their effectiveness in women.
authors.forename: A B V
authors.initials: AB
authors.lastname: RYDEN
mesh_terms: D003271:Contraceptive Agents, Female; D045166:Estradiol Congeners; D004967:Estrogens; D005260:Female; D006801:Humans
chemical_list: D003271:Contraceptive Agents, Female; D045166:Estradiol Congeners; D004967:Estrogens