Comparative Study

Opioids and the management of chronic severe pain in the elderly: consensus statement of an International Expert Panel with focus on the six clinically most often used World Health Organization Step III opioids (buprenorphine,...

Pain Pract. 2008 Jul 1;8(4):287-313.
Randomized Controlled Trial

Sustained-release oral morphine versus transdermal fentanyl and oral methadone in cancer pain management.

Eur J Pain. 2008 Nov 1;12(8):1040-6.
Article

Mediation of opioid analgesia by a truncated 6-transmembrane GPCR.

J. Clin. Invest. 2015 Jul 1;125(7):2626-30.