TY  - RPRT
TI  - Intrarater variation--more studies are needed.
AU  - Paul G McDonough
PY  - 2006
DO  - 10.1016/j.fertnstert.2005.11.018
UR  - https://pubmed.ncbi.nlm.nih.gov/16595263/
ID  - 16595263
ER  -