Brazil. Tough placebo rules leave scientists out in the cold.
Vieira
Cassio Leite
CL
D026688:Bioethical Issues; D001938:Brazil; D018849:Controlled Clinical Trials as Topic / Q000592:standards*; D028744:Ethics Committees, Research; D006801:Humans; D007391:International Cooperation; D010919:Placebos
D010919:Placebos