1. Green CR, Wheeler JRC, Marchant B, LaPorte F, Guerrero E. Analysis of the physician variable in pain management. Pain Med. 2001;2:317–27.
2. Librach SL. Managing chronic pain in family practice. Can Fam Physician. 1993;39:539–44.
3. Potter M, Schafer S, Gonzalez-Mendez E, Gjeltema K, Lopez A, Croughan-Minihane M. Opioids for chronic nonmalignant pain: attitudes and practices of primary care physicians in the UCSG/Stanford Collaborative Research Network. J Fam Pract. 2001;50:145–51.
4. Ponte CD, Johnson-Tribino J. Attitudes and knowledge about pain: an assessment of West Virginia family physicians. Fam Med. 2005;37:477–80.
5. Bendsen P, Hensing G, Ebeling C, Schedin A. What are the qualities of dilemmas experienced when prescribing opioids in general practice? Pain. 1999;82:89–96.