title: The making of an advanced practice sonographer.
mesh_terms: D005260:Female; D006801:Humans; D008404:Massachusetts; D019982:Organizational Case Studies; D010823:Physician Assistants; D011247:Pregnancy; D017009:Professional Autonomy; D011785:Quality Assurance, Health Care; D016216:Ultrasonography, Prenatal / Q000592:standards*