Where's the bias?
Davidoff
F
F
D015982:Bias; D035843:Biomedical Research; D003139:Common Cold / Q000188:drug therapy; D016265:Conflict of Interest; D030881:Disclosure; D035081:Editorial Policies; D006801:Humans; D012106:Research; D015032:Zinc / Q000627:therapeutic use
D015032:Zinc