@article{211936,
      author = {Ballweg, Ruth. and Stolberg, Sherry. and Sullivan, Edward  M.,},
      url = {http://library.usi.edu/record/211936},
      title = {Physician assistant : guide to clinical practice /},
      publisher = {W.B. Saunders Co.,},
      recid = {211936},
      pages = {xviii, 863 p. :},
      address = {Philadelphia :},
      year = {1999},
}