title: Stand-alone obs unit success.
mesh_terms: D006757:Hospital Units / Q000592:standards*; D006801:Humans; D007902:Length of Stay / Q000706:statistics & numerical data; D024802:Nurse's Role; D019982:Organizational Case Studies; D010414:Pennsylvania; D058996:Quality Improvement; D014850:Waiting Lists; D057832:Watchful Waiting