1. American University of Beirut Faculty of Medicine, Beirut, Lebanon.
2. Division of Plastic and Reconstructive Surgery, Strong Memorial Hospital, University of Rochester Medical Center, Rochester, New York, USA.
3. Department of Plastic and Reconstructive Surgery, Medstar Georgetown University Hospital, Baltimore, Maryland, USA.
4. Department of Plastic, Reconstructive and Burn Surgery, Arzobispo Loayza National Hospital, Lima, Peru.