1. Risque infectieux chez l'enfant en crèche;Collet;Rev Prat,1992
2. Auditory screening of four-year old children;Kohler;Acta Pediatr Scand,1972
3. Incidence of illness in early group and family day-care;Doyle;Pediatrics,1976
4. Infections in preschool children in group day-care;Strangert;Acta Paediatr Scand,1976
5. Otitis media in young children in different types of day-care;Strangert;Scand J Infect Dis,1977