1. Local Health Unit (TOMY) , 68992 Hellenic Open University , Lamia , Greece
2. General Hospital of Lamia , Lamia , Greece
3. Clinical Epidemiology Laboratory, Faculty of Nursing , 69065 National and Kapodistrian University of Athens , Athens , Greece
4. Department of Nursing , 68992 University of Thessaly, Hellenic Open University , Larissa , Greece
5. 6 Kindergarten of Lamia , Lamia, Heraklion , Greece
6. Department of Nursing , 68992 Hellenic Mediterranean University , Hellenic Open University , Greece
7. 68992 Hellenic Open University , Patras , Greece