1. Faculty of Nursing, School of Health Sciences, National and Kapodistrian University of Athens, Athens, Greece
2. “Merimna” Society for the Care of Children and Families Facing Illness and Death, Athens, Greece
3. UCL-School of Life and Medical Sciences, Faculty of Population Health Sciences Great Ormond Street Institute of Child Health, Population, Policy and Practice Research and Teaching Department, Louis Dundas Centre for Children’s Palliative Care, UK