Primum non nocere--a paradoxical ally in defense of placebos in analgesic trials?
Burt
R A
RA
D000700:Analgesics / Q000627:therapeutic use*; D018849:Controlled Clinical Trials as Topic; D004992:Ethics, Medical; D006801:Humans; D010919:Placebos
D000700:Analgesics; D010919:Placebos