Legionella: a risk factors analysis.
D000367:Age Factors; D002980:Climate; D015438:Health Behavior; D006801:Humans; D007877:Legionnaires' Disease / Q000453:epidemiology* / Q000209:etiology* / Q000517:prevention & control; D008284:Maintenance and Engineering, Hospital / Q000379:methods / Q000592:standards*; D012307:Risk Factors; D012621:Seasons; D012737:Sex Factors; D014481:United States / Q000453:epidemiology; D014871:Water Microbiology