title: Turf wars old and new: specialization and board certification.
authors.affiliation: dullyot@aol.com
authors.forename: Daniel J
authors.initials: DJ
authors.lastname: Ullyot
mesh_terms: D001291:Attitude of Health Personnel; D002568:Certification / Q000592:standards; D002983:Clinical Competence / Q000592:standards; D006801:Humans; D008511:Medicine / Q000592:standards*; D012955:Societies, Medical / Q000592:standards*; D013038:Specialization; D013044:Specialty Boards / Q000592:standards*