Postmarketing Monitoring of Intussusception After RotaTeq™ Vaccination-- United States, February 1, 2006- February 15,2007. - Belongia, E.; Izurieta, H.; Braun, M.M.; Ball, R.; Haber, P.; Baggs, J.; Weintraub, E.; Gargiullo, P.; Vellozzi, C.; Iskander, J.; Patel, M.; Parashar, U.; et al. (JAMA: Journal of the American Medical Association, 2007)