TY  - RPRT
TI  - Placebos, active control groups, and the unpredictability paradox.
AU  - K M Mattocks
AU  - R I Horwitz
PY  - 2000
DO  - 10.1016/s0006-3223(00)00839-8
UR  - https://pubmed.ncbi.nlm.nih.gov/10773175/
ID  - 10773175
ER  -