[Influenza prophylaxis. II. Sources of error in testing drugs outside hospitals].
D001645:Biguanides / Q000627:therapeutic use*; D002986:Clinical Trials as Topic; D006801:Humans; D007251:Influenza, Human / Q000517:prevention & control*; D009787:Occupational Medicine; D010919:Placebos
D001645:Biguanides; D010919:Placebos
Influensaprofylax (II): Felkällor vid läkemedelsprövning utanför sjukhus.