Greiner W, Lehmann K, Earnshaw S, Bug C, Sabatowski R. Economic evaluation of Durogesic in moderate to severe, nonmalignant, chronic pain in Germany. Eur J Health Econ. 2006 Dec 1;7(4):290-6.
Pignone M, Earnshaw S, Tice JA, Pletcher MJ. Aspirin, statins, or both drugs for the primary prevention of coronary heart disease events in men: a cost-utility analysis. Ann Intern Med. 2006 Mar 7;144(5):326-36.