1. Department of Plastic, Reconstructive and Hand Surgery; Academic Medical Center (AMC); University of Amsterdam; the Netherlands
2. Department of Pediatrics; Lenox Hill Hospital; New York NY U.S.A.
3. Department of Dermatology; Radboud University Medical Center; Nijmegen the Netherlands
4. Department of Dermatology; University of California San Francisco; San Francisco U.S.A.
5. Department of Otolaryngology; Arkansas Children's Hospital; Little Rock; AR U.S.A.
6. Wellington Regional Plastic, Maxillofacial and Burns Unit; Hutt Hospital; Wellington New Zealand
7. Gillies McIndoe Research Institute; Wellington New Zealand
8. Department of Plastic and Reconstructive Surgery; James Cook University Hospital; Middlesbrough U.K.
9. Department of Paediatrics; University of Melbourne; Melbourne Australia
10. Murdoch Children's Research Institute; Melbourne Australia
11. Center for Vascular Anomalies; Division of Plastic and Reconstructive Surgery; Cliniques Universitaires Saint-Luc; Brussels Belgium
12. Department of Dermatology; Academic Medical Center (AMC); University of Amsterdam; the Netherlands