TY  - RPRT
TI  - Factors affecting menstrual cycle characteristics.
AU  - Yan Liu
AU  - Ellen B Gold
AU  - Bill L Lasley
AU  - Wesley O Johnson
PY  - 2004
DO  - 10.1093/aje/kwh188
UR  - https://pubmed.ncbi.nlm.nih.gov/15234934/
ID  - 15234934
ER  -