1. Department of Dermatology, Nantes University Hospital, Nantes, France
2. Department of Intensive Care of Neonatology, Nantes University Hospital, Nantes, France
3. Department of Dermatology, Brest University Hospital, Brest, France
4. Department of Infantile Surgery, Brest University Hospital, Brest, France
5. Department of Interventional Radiology and Dermatology, Necker Enfants Malades University Hospital, Paris, France
6. Department of Vascular and Plastic Surgery, Nantes University Hospital, Nantes, France
7. Department of Histology, Nantes University Hospital, Nantes, France