TY  - RPRT
TI  - Hormonal changes associated with bleeding during low dose progestogen contraception delivered by Norplant subdermal implants.
AU  - A Faúndes
AU  - F Alvarez-Sanchez
AU  - V Brache
AU  - E Jimenez
AU  - A S Tejada
PY  - 1991
DO  - 10.1007/bf01850722
UR  - https://pubmed.ncbi.nlm.nih.gov/1908178/
ID  - 1908178
ER  -