Carrigan G, Bradbury BD, Brookhart MA, Capra WB, Chia V, Rothman KJ, Sarsour K, Taylor MD, Brown JS. External comparator groups derived from real-world data used in support of regulatory decision making: use cases and challenges. Curr Epidemiol Rep. 2022 Dec;9:326-37. doi: 10.1007/s40471-022-00305-9
Kawai AT, Martin D, Kulldorff M, Li L, Cole DV, McMahill-Walraven CN, Selvam N, Selvan MS, Lee GM. Febrile seizures after 2010-2011 trivalent inactivated influenza vaccine. Pediatrics. 2015 Oct;136(4):e848-855. doi: 10.1542/peds.2015-0635