State upgrades security at mental hospitals after escaped patients kill.
D005555:Forensic Psychiatry; D006708:Homicide; D006778:Hospitals, Psychiatric / Q000458:organization & administration*; D006801:Humans; D007297:Inpatients; D007298:Insanity Defense; D009519:New York City; D012637:Security Measures / Q000592:standards*