Restrict subspecialists to their own field or risk quality problems.
D002983:Clinical Competence; D006801:Humans; D008505:Medical Staff, Hospital / Q000592:standards*; D008511:Medicine / Q000592:standards*; D011785:Quality Assurance, Health Care; D017751:Safety Management / Q000458:organization & administration*; D013038:Specialization; D014481:United States