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APA Citation
Latimer, N., Lord, J., Grant, R. L., O'Mahony, R., Dickson, J., & Conaghan, P. G. (2009). cost effectiveness of COX 2 selective inhibitors and traditional NSAIDs alone or in combination with a proton pump inhibitor for people with osteoarthritis. BMJ, 339, . http://access.bl.uk/ark:/81055/vdc_100151253316.0x000017