TY  - RPRT
TI  - Evaluating preference effects in partially unblinded, randomized clinical trials.
AU  - Scott D Halpern
PY  - 2003
DO  - 10.1016/s0895-4356(02)00598-x
UR  - https://pubmed.ncbi.nlm.nih.gov/12654404/
ID  - 12654404
ER  -