TY - GEN AU - Nitsche,Joshua F AU - Shumard,Kristina M AU - Brost,Brian C TI - Validation of Ultrasound Guidance Targeting Tasks: Relationship of Performance and Clinical Experience SN - 1873-233X PY - 2017///1003 KW - Clinical Competence KW - standards KW - Prospective Studies KW - Ultrasonography, Interventional N1 - Publication Type: Journal Article; Validation Study UR - https://doi.org/10.1097/AOG.0000000000002251 ER -