An operating environmental health program.
D000337:Aerospace Medicine; D001774:Blood Chemical Analysis; D002140:California; D003191:Comprehensive Health Care; D004562:Electrocardiography; D004632:Emergency Medical Services; D004782:Environmental Health; D006801:Humans; D010808:Physical Examination; D010809:Physical Fitness; D011315:Preventive Medicine; D012129:Respiratory Function Tests