1. Faculty of Nursing, University of Thessaly, 41500 Larissa, Greece
2. Clinical Epidemiology Laboratory, Faculty of Nursing, National and Kapodistrian University of Athens, 11527 Athens, Greece
3. Department of Endocrinology and Diabetes Center, General Hospital “G. Gennimatas”, 11527 Athens, Greece
4. 3rd Regional Health Authority of Macedonia, 54630 Thessaloniki, Greece
5. Palliative Care Unit Galilee, 19004 Spata, Greece
6. Primary Education Directorate of Fthiotida, 35131 Lamia, Greece
7. Center for Health Services Management and Evaluation, Faculty of Nursing, National and Kapodistrian University of Athens, 11527 Athens, Greece