1. Firefighters' Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, DC, USA.
2. The Burn Center, MedStar Washington Hospital Center, Washington, DC, USA.
3. Department of Biochemistry and Molecular and Cellular Biology, Georgetown University School of Medicine, Washington, DC, USA.
4. Department of Surgery, MedStar Georgetown University Hospital, Washington, DC, USA.