TY  - RPRT
TI  - Progestogens before and after the menopause.
AU  - C R Kay
PY  - 1980
DO  - 10.1136/bmj.281.6243.811-b
UR  - https://pubmed.ncbi.nlm.nih.gov/7427464/
ID  - 7427464
ER  -