TY  - RPRT
TI  - Mammographic density changes during the menstrual cycle.
AU  - G Ursin
AU  - Y R Parisky
AU  - M C Pike
AU  - D V Spicer
PY  - 2001
UR  - https://pubmed.ncbi.nlm.nih.gov/11219771/
ID  - 11219771
ER  -