Burch, F., Fishman, R., Messina, N., Corser, B., Radulescu, F., Sarbu, A., Craciun-Nicodin, M. M., Chiriac, R., Beaulieu, A., Rodrigues, J., Beignot-Devalmont, P., Duplan, A., Robertson, S., Fortier, L., Bouchard, S. A comparison of the analgesic efficacy of Tramadol Contramid OAD versus placebo in patients with pain due to osteoarthritis. 2007; 3: 328-38

PubMed ID: PM:21041576