title: Outbreak of illness in a school chorus. Toxic poisoning or mass hysteria?
mesh_terms: D000293:Adolescent; D002648:Child; D003937:Diagnosis, Differential; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D007046:Hysteria / Q000175:diagnosis*; D007902:Length of Stay; D008297:Male; D008399:Mass Behavior; D009146:Music; D011041:Poisoning / Q000175:diagnosis*; D012737:Sex Factors; D013315:Stress, Psychological / Q000150:complications; D013334:Students