Travellers requiring special advice.
D000342:Affective Symptoms / Q000209:etiology; D002648:Child; D005260:Female; D005767:Gastrointestinal Diseases / Q000209:etiology; D006331:Heart Diseases / Q000209:etiology; D006801:Humans; D008499:Medical Records; D001523:Mental Disorders / Q000209:etiology; D012120:Respiration Disorders / Q000209:etiology; D014195:Travel; D014329:Tropical Climate