1. From the University of Tampere Medical School, Tampere, Finland (T.V., S.Y., A.K.); the Center for Pediatric Research, Eastern Virginia Medical School, Norfolk (D.O.M.); the Division of Pediatric Infectious Diseases, Rhode Island Hospital, Providence (P.D.); the Center for the Evaluation of Vaccination, University of Antwerp, Antwerp, Belgium (P.V.D.); the Center for American Indian Health, Department of International Health, Johns Hopkins University Bloomberg School of Public Health, Baltimore (M.S., J...