TY  - RPRT
TI  - Analyzing multiply matched cohort studies with two different comparison groups: application to pregnancy rates among HIV+ women.
AU  - Yan Li
AU  - Daniel Zelterman
AU  - Brian W C Forsyth
PY  - 2003
DO  - 10.1111/1541-0420.00073
UR  - https://pubmed.ncbi.nlm.nih.gov/14601764/
ID  - 14601764
ER  -