1. Department of Neonatology; Rigshospitalet; Copenhagen University Hospital; Copenhagen Denmark
2. Wilhelmina Children's Hospital; University Medical Center Utrecht; Utrecht The Netherlands
3. Department of Neonatology; Hospices Civils de Lyon; Claude Bernard University; Lyon France
4. Department of Neonatology; La Paz University Hospital; Madrid Spain
5. INFANT Centre; University College Cork; Cork Ireland
6. NICU; Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico; Università degli Studi di Milano; Milan Italy
7. Copenhagen Trial Unit; Centre for Clinical Intervention Research; Rigshospitalet; Copenhagen University Hospital; Copenhagen Denmark
8. Department of Pediatrics; Research Unit for Neonatal Micro- and Macrocirculation; Medical University of Graz; Graz Austria