1. Medical School, University of Ioannina, Ioannina, Greece;
2. Department of Surgery, Division of Plastic and Reconstructive Surgery, University Hospital of Ioannina, Ioannina, Greece;
3. Imperial College, Medical School, London, UK;
4. Brookings Institution, Washington, District of Columbia;
5. World Bank, Washington, District of Columbia;
6. Aletheia Research Institution, Palo Alto, California;
7. Hoover Institution, Stanford University, Stanford, California;
8. Division of Plastic and Reconstructive Surgery, R. Adams Cowley Shock Trauma Center, University of Maryland Medical Center, Baltimore, Maryland