Occupational risk of human Cytomegalovirus and Parvovirus B19 infection in female day care personnel in the Netherlands a study based on seroprevalence - Stelma, F F; Smismans, A; Goossens, V J; Bruggeman, C A; Hoebe, C J (Eur J Clin Microbiol Infect Dis, 2009)