TY  - RPRT
TI  - Common problems in clinical trials.
AU  - R J Prineas
PY  - 1971
DO  - 10.5694/j.1326-5377.1971.tb50638.x
UR  - https://pubmed.ncbi.nlm.nih.gov/4937858/
ID  - 4937858
ER  -