TY  - GEN
AU  - Kovacs,L
AU  - Zalanyi,S
AU  - Tekulics,A
AU  - Sas,M
TI  - [The expediency of using natural oestrogens in combined oral contraceptive tablets]
SN  - 0030-6037
PY  - 1984///1113
KW  - Amenorrhea
KW  - Contraception
KW  - Contraceptive Agents
KW  - Contraceptive Agents, Female
KW  - Contraceptives, Oral
KW  - Contraceptives, Oral, Combined
KW  - Estradiol
KW  - Estriol
KW  - Ethinyl Estradiol
KW  - Evaluation Studies as Topic
KW  - Family Planning Services
KW  - Menstrual Cycle
KW  - Reproductive Control Agents
N1  - Publication Type: English Abstract; Journal Article
ER  -