TY  - RPRT
TI  - An approach to several problems in using large databases for population-based case-control studies of the therapeutic efficacy and safety of anti-hypertensive medicines.
AU  - B M Psaty
AU  - T D Koepsell
AU  - D Siscovick
AU  - P Wahl
AU  - J P Logerfo
AU  - T S Inui
AU  - E H Wagner
PY  - 1991
DO  - 10.1002/sim.4780100416
UR  - https://pubmed.ncbi.nlm.nih.gov/1676187/
ID  - 1676187
ER  -