@misc{indiciaed1c0549c9a15, title = {Placebos, active control groups, and the unpredictability paradox.}, author = {K M Mattocks and R I Horwitz}, year = {2000}, doi = {10.1016/s0006-3223(00)00839-8}, url = {https://pubmed.ncbi.nlm.nih.gov/10773175/}, note = {Source identifier: 10773175} }