title: [Progress and problems in the therapeutic use of the follicular hormone (progynon C)].
authors.forename: W
authors.initials: W
authors.lastname: HARING
mesh_terms: D004967:Estrogens; D004997:Ethinyl Estradiol; D006728:Hormones
chemical_list: D004967:Estrogens; D006728:Hormones; D004997:Ethinyl Estradiol