TY  - RPRT
TI  - Factor structure of common drug usage.
AU  - N L Pedersen
AU  - G E McClearn
PY  - 1983
DO  - 10.1016/0376-8716(83)90058-3
UR  - https://pubmed.ncbi.nlm.nih.gov/6641502/
ID  - 6641502
ER  -