1. Department of Plastic, Reconstructive and Maxillofacial Surgery, R Adams Cowley Shock Trauma Center, University of Maryland School of Medicine, Baltimore, MD, USA
2. Mount Sinai Beth Israel, New York, NY, USA
3. University of Washington, Seattle, WA, USA
4. University of Padova Medical School, Padova, Italy
5. The University of Hong Kong, Hong Kong
6. University Hospital 12 de Octubre, Madrid, Spain
7. University and Military Hospital Ulm, Ulm, Germany
8. University of California, Davis, Sacramento, CA, USA
9. Department of Oral and Maxillofacial Surgery, Erasmus MC, Rotterdam, Netherlands