Jeffrey W Janata

American Society of Interventional Pain Physicians (ASIPP) guidelines for responsible opioid prescribing in chronic non-cancer pain: Part 2--guidance.

Hans Hansen, Joshua A Hirsch, Salahadin Abdi, 2012, Pain physician.

Opioid epidemic in the United States.

Laxmaiah Manchikanti, L. Manchikanti, S. Helm, 2012, Pain physician.