The role of physician assistants in rural health care: a systematic review of the literature Henry, L.R.; Hooker, R.S.; Yates, K.L. Journal of Rural Health Official Journal of the American Rural Health Association and the National Rural Health Care Association 27(2): 220-229 2011 0890-765X 10.1111/j.1748-0361.2010.00325.x https://eurekamag.com/research/056/483/056483358.php