TY  - RPRT
TI  - Controlled clinical trials.
AU  - D W Alling
AU  - M Halperin
AU  - J H Ware
PY  - 1978
DO  - 10.1126/science.715462
UR  - https://pubmed.ncbi.nlm.nih.gov/715462/
ID  - 715462
ER  -