Severijnen, AJVerbrugh, HAMintjes-de Groot, AJVandenbroucke-Grauls, CMJEvan Pelt, W2025-03-142025-03-141997https://rivm.openrepository.com/handle/10029/637171Sentinel system for nosocomial infections in The Netherlands: a pilot study.ArticleInfect Control Hosp Epidemiol 1997; 18:818-242025-03-14