TY  - RPRT
TI  - Factors often not considered before a multicenter trial is started.
AU  - E Hardy
PY  - 1996
DO  - 10.1016/s0009-9236(96)90126-5
UR  - https://pubmed.ncbi.nlm.nih.gov/8823229/
ID  - 8823229
ER  -