TY - RPRT TI - The nurse practitioner: redefining occupational boundaries? AU - T D Barton AU - R Thome AU - M Hoptroff PY - 1999 DO - 10.1016/s0020-7489(98)00058-3 UR - https://pubmed.ncbi.nlm.nih.gov/10375067/ ID - 10375067 ER -