TY - BOOK AU - Ballweg, R|Sullivan, M.E|Brown, D|Vetrosky, D TI - Physician assistant: a guide to clinical practice SN - 978-1-4557-0657-0 AV - W 21.5 .B35 2013 PY - 2013/// CY - Philadelphia PB - ELSEVIER KW - Physicians|Clinical Competence|Delivery of Health Care ER -