TY  - RPRT
TI  - Grading a developmental continuum--now and then.
AU  - Howard W Jones
PY  - 2004
DO  - 10.1016/j.fertnstert.2004.07.939
UR  - https://pubmed.ncbi.nlm.nih.gov/15589893/
ID  - 15589893
ER  -