Seeger JD, Quinn S, Lievano F, Rivero E, Earnest DL, Shetzline M, Holden W, Walker AM. No increased risk of abdominal or pelvic surgery associated with tegaserod exposure: the zelnormTM epidemiological study. Presented at the 22nd International Conference on Pharmacoepidemiology & Therapeutic Risk Management,; August 2006. Lisbon, Portugal. [abstract] Pharmacoepidemiol Drug Saf. 2006 Aug; 15(Suppl 1):S12-3.