Letter: Clinical trials with vitamin C.
D000328:Adult; D001205:Ascorbic Acid / Q000008:administration & dosage / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D003139:Common Cold / Q000517:prevention & control*; D004032:Diet; D005260:Female; D006801:Humans; D008297:Male
D001205:Ascorbic Acid