S. Saint, D. Christakis, S. Saha, J. Elmore, D. Welsh, P. Baker, and T. Koepsell. Journal of general internal medicine : official journal of the Society for Research and Education in Primary Care Internal Medicine, 15 (12):
881-884(December 2000)LR: 20061115; PUBM: Print; JID: 8605834; ppublish.
M. Eccles, N. Rousseau, and N. Freemantle. Journal of health services research & policy, 7 (2):
98-103(April 2002)LR: 20041117; PUBM: Print; JID: 9604936; ppublish.