Vitamin C and the common cold.
D001205:Ascorbic Acid / Q000008:administration & dosage / Q000627:therapeutic use*; D003139:Common Cold / Q000517:prevention & control*; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D008297:Male; D013997:Time Factors
D001205:Ascorbic Acid