TY  - RPRT
TI  - Controlled clinical trials.
AU  - Q E Whiting-O'Keefe
PY  - 1983
DO  - 10.1016/0002-9343(83)90428-x
UR  - https://pubmed.ncbi.nlm.nih.gov/6638041/
ID  - 6638041
ER  -