Doward LC, McKenna SP, Meads DM, Jovell AJ, Fisk J, Eckert BJ. The international development of patient reported outcome indices for multiple sclerosis. Poster presented at the 2006 Sixteenth Meeting of the European Neurological Society; May 2006. Lausanne, Switzerland. [abstract] J Neurol. 2006; 253(Suppl 2):125.
Willett W, Greenland S, MacMahon B, Trichopoulos D, Rothman KJ, Thomas D. The discipline of epidemiology. Science. 1995 Sep 8;269(5229):1325-6. doi: 10.1126/science.7660105
Rothman KJ. Journal policies on conflict of interest. Science. 1993 Sep 24;261(5129):1661. doi: 10.1126/science.8378766