Authors: Lisa A Jackson; Michael L Jackson; Jennifer C Nelson; Kathleen M Neuzil; Noel S Weiss Journal: Int J Epidemiol Date: 2005-12-20 Impact factor: 7.196
Authors: Janet E McElhaney; Catherine Ewen; Xin Zhou; Kevin P Kane; Dongxu Xie; W David Hager; Mary Beth Barry; Alison Kleppinger; Yazhen Wang; R Chris Bleackley Journal: Vaccine Date: 2009-03-03 Impact factor: 3.641