Influence of physiological vitamin C allowances on the health status of miners.
D000328:Adult; D001205:Ascorbic Acid / Q000008:administration & dosage* / Q000494:pharmacology*; D003032:Coal Mining; D003604:Czechoslovakia; D006801:Humans; D007251:Influenza, Human / Q000517:prevention & control; D009787:Occupational Medicine; D012141:Respiratory Tract Infections / Q000517:prevention & control
D001205:Ascorbic Acid