TY  - RPRT
TI  - Ovulation timing. Concepts and controversies.
AU  - M Goodman
PY  - 2001
DO  - 10.1016/s0195-5616(01)50201-6
UR  - https://pubmed.ncbi.nlm.nih.gov/11265488/
ID  - 11265488
ER  -