title: Gheel revisited.
mesh_terms: D001530:Belgium; D049691:History, Medieval; D006760:Hospitalization; D006778:Hospitals, Psychiatric / Q000706:statistics & numerical data; D006801:Humans; D007902:Length of Stay; D001523:Mental Disorders / Q000266:history / Q000628:therapy; D010359:Patient Readmission; D011787:Quality of Health Care; D014481:United States