Johannes CB, Schneider GA, Walker AM, Viveash D, Wallis WJ. Increased incidence of lymphoma among patients with rheumatic diseases based on automated insurance claims information. Presented at the 20th ICPE International Conference on Pharmacoepidemiology & Therapeutic Risk Management; August 22, 2004. Bordeaux, France. [abstract] Pharmacoepidemiol Drug Saf. 2004 Sep 23; 13:S239.