Brian R. Gastman, MD, FACS 
Cleveland Clinic Lerner College of Medicine, Dermatology and Plastic Surgery Institute, Department of Plastic Surgery, Taussig Cancer Center, Lerner Research Institute, Department of Immunology, Head and Neck Institute, Cleveland Clinic, 9500 Euclid Avenue, Desk A60, Cleveland, OH 44195, USA
Michael W. Neumeister, MD, FRCSC, FACS 
Department of Surgery, Institute for Plastic Surgery, Southern Illinois University, School of Medicine, 3rd Floor Baylis, Suite 357, 747 North Rutledge, Springfield, IL 62702, USA