1. Division of Plastic & Reconstructive Surgery, Department of Surgery, Yale School of Medicine , New Haven, CT 06519 , USA
2. School of Medicine, University of Leeds , Leeds LS2 9JT , UK
3. Department of Plastic, Aesthetic, Hand and Reconstructive Surgery, Burn Center, Hannover Medical School , Hannover 30625 , Germany
4. Department of Surgery, Connecticut Burn Center, Bridgeport Hospital , Bridgeport, CT 06610 , USA