Jin Bo Tang1, Bella Avanessian2. 1. Department of Hand Surgery, Affiliated Hospital of Nantong University, 20 West Temple Road, Nantong 226001, Jiangsu, China. Electronic address: jinbotang@yahoo.com. 2. Department of Plastic Surgery, Rhode Island Hospital, The Alpert Medical School of Brown University, Providence, COOP 500, 2 Dudley Street, RI 02903, USA. Electronic address: bellachka@gmail.com.