1. Department of Plastic and Reconstructive Surgery, Georgetown University School of Medicine, Washington, District of Columbia, USA.
2. Department of Plastic and Reconstructive Surgery, MedStar Georgetown University Hospital, Washington, District of Columbia, USA.
3. Department of Plastic and Reconstructive Surgery, Center for Wound Healing, MedStar Georgetown University Hospital, Washington, District of Columbia, USA.
4. Department of Plastic Surgery, Wound Care Center, William P. Clements Jr. University Hospital, Dallas, Texas, USA.