Schellekens, JFPSchouls, LMvan Pelt, WEsveld, Mvan Leeuwen, WJ2025-03-142025-03-141998https://rivm.openrepository.com/handle/10029/637492Group A streptococci: a change in virulence?ArticleNeth J Med 1998; 52:209-172025-03-14