L. Degli Esposti, M. Di Martino, G. Didoni, C. Veronesi, S. Saragoni, and S. Buda, “Pharmacoutilization of anti-inflammatory and gastroprotective drugs in patients with osteoarthritis: comparison between COXIBs and conventional NSAIDs by using administrative records”, FE, vol. 7, no. 4, pp. 247–254, Jan. 2006.