"EPIDEMIC COLLAPSE".
D058872:Epidemics; D004813:Epidemiology; D006801:Humans; D006985:Hyperventilation; D012769:Shock; D013575:Syncope; D014636:Valsalva Maneuver; D014777:Virus Diseases
EPIDEMIOLOGY; HYPERVENTILATION; SYNCOPE; VALSALVA'S MANEUVER; VIRUS DISEASES