Ahmad, N., Boutron, I., Dechartres, A., Durieux, P., & Ravaud, P. (2011). Geographical Representativeness of Published and Ongoing Randomized Controlled Trials. The Example of: Tobacco Consumption and HIV Infection. Public Library of Science.

Ahmad, Nizar, Isabelle Boutron, Agnes Dechartres, Pierre Durieux, and Philippe Ravaud. Geographical Representativeness of Published and Ongoing Randomized Controlled Trials. The Example Of: Tobacco Consumption and HIV Infection. Public Library of Science, 2011.

Ahmad, Nizar, et al. Geographical Representativeness of Published and Ongoing Randomized Controlled Trials. The Example Of: Tobacco Consumption and HIV Infection. Public Library of Science, 2011.