title: 'Expanded duty' needs definition.
mesh_terms: D003695:Delivery of Health Care / Q000592:standards; D003727:Dental Auxiliaries / Q000193:education / Q000706:statistics & numerical data*; D003729:Dental Care / Q000592:standards*; D006801:Humans; D007879:Legislation, Dental; D010414:Pennsylvania; D011369:Professional-Patient Relations