Susceptibility to measles, mumps, and rubella in 5-year-old children in Flanders, Belgium33992, Leuridan, E., Maertens K., Wautier M., Hutse Veronik, and Theeten Heidi , Eur.J.Pediatr., 0/7/2015, Volume 174, Issue 7, Number 932, p.925 - 932, (2015)