1. 1st Department of Pediatrics, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
2. Department of Pediatrics, University General Hospital of Alexandroupolis, Democritus University of Thrace, 68100 Alexandroupolis, Greece
3. Center for Health Services Management and Evaluation, Department of Nursing, School of Health Sciences, National and Kapodistrian University of Athens, 11527 Athens, Greece
4. School of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece
5. Department of Nursing, University of West Attica, 12243 Athens, Greece
6. Department of Nursing, International Hellenic University, 68300 Didimoteixo, Greece
7. Department of Nursing, General Hospital of Kavala, 65500 Kavala, Greece
8. Department of Nursing, School of Health Rehabilitation Sciences, University of Patras, 26334 Patras, Greece