1 Department of Dermatology, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam, Center of Pediatric Dermatology, Center of Rare Skin Diseases, Vascular Anomaly Center Erasmus MC Rotterdam, member of the ERN-SKIN-Mosaic group and ERN-VASCERN-VASCA group, Rotterdam, Netherlands.
2 Department of Child and Adolescent Psychology/Psychiatry, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, Netherlands.
3 Department of Surgery, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht, Netherlands.
4 Department of Pediatrics(-Hemato-Oncology), Center of Rare Skin Diseases, Vascular Anomaly Center Erasmus MC Rotterdam, member of the ERN-SKIN-Mosaic group and ERN-VASCERN-VASCA group, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, Netherlands.
5 Department of Pediatric Cardiology, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht, Netherlands.
6 Department of Intensive Care and Pediatric Surgery, Center of Rare Skin Diseases, Vascular Anomaly Center Erasmus MC Rotterdam, member of the ERN-SKIN-Mosaic group and ERN-VASCERN-VASCA group, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, Netherlands.
7 Department of Pharmacology and Toxicology, Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, Netherlands.
8 Department of Plastic Surgery, UMC Utrecht Center for Vascular Anomalies, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht, Netherlands.
9 Department of Plastic, Reconstructive and Hand Surgery, UMC Location University of Amsterdam, Utrecht, Netherlands.
10 Department of Dermatology, UMC Utrecht Center for Vascular Anomalies, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht, Netherlands.
11 Department Emma Children's Hospital, UMC Location University of Amsterdam, Amsterdam, Netherlands.
12 Department of Dermatology, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam, Center of Pediatric Dermatology, Center of Rare Skin Diseases, Vascular Anomaly Center Erasmus MC Rotterdam, member of the ERN-SKIN-Mosaic group and ERN-VASCERN-VASCA group, Rotterdam, Netherlands. s.pasmans@erasmusmc.nl.