TY  - RPRT
TI  - A clinical study on a sequential oral contraceptive-Ovisec.
AU  - L Sölvell
AU  - L Nilsson
PY  - 1968
DO  - 10.3109/00016346809156612
UR  - https://pubmed.ncbi.nlm.nih.gov/4236366/
ID  - 4236366
ER  -