1. Department of Dermatology; University Hospital Jena; Jena Germany
2. Division of Gastroenterology, Hepatology, and Nutrition; Children's Hospital of Philadelphia; Philadelphia Pennsylvania
3. Division of Plastic Surgery, Department of Surgery; Northwestern University Feinberg School of Medicine; Chicago Illinois
4. Department of Orthopedic Surgery; Brown University; Providence Rhode Island
5. Center for Wound Healing; South Shore Hospital; Weymouth Massachusetts