Ethical use of placebos in clinical trials.
R D
RD
Orr
D000897:Anti-Ulcer Agents / Q000627:therapeutic use*; D004992:Ethics, Medical; D005194:Family Practice; D005764:Gastroesophageal Reflux / Q000188:drug therapy*; D006801:Humans; D015337:Multicenter Studies as Topic / Q000592:standards*; D010919:Placebos; D011899:Ranitidine / Q000627:therapeutic use*
D000897:Anti-Ulcer Agents; D010919:Placebos; D011899:Ranitidine