title: The changing role of the COO.
authors: J T
authors: JT
authors: Nilson
mesh_terms: D016542:Chief Executive Officers, Hospital; D019033:Delivery of Health Care, Integrated / Q000458:organization & administration; D006740:Hospital Administrators / Q000639:trends*; D007400:Interprofessional Relations; D007587:Job Description; D009936:Organizational Innovation; D011361:Professional Competence; D014481:United States