Echinacea for upper respiratory infections.
Lord
R W
RW
Wake Forest University School of Medicine, Winston-Salem, North Carolina, USA. rlord@wfubmc.edu
D000208:Acute Disease; D020900:Echinacea / Q000627:therapeutic use*; D006801:Humans; D008517:Phytotherapy; D010946:Plants, Medicinal; D016032:Randomized Controlled Trials as Topic; D015203:Reproducibility of Results; D012141:Respiratory Tract Infections / Q000188:drug therapy* / Q000517:prevention & control*; D016896:Treatment Outcome