Vol. 26 No. 1, 2014 139 Received December 7, 2012, Revised February 5, 2013, Accepted for publication March 31, 2013 Corresponding author: Hong Sang, Department of Dermatology, Jinling Hospital, Southern Medical University (Guangzhou) School of Medicine, 305 E Zhongshan Road, Nanjing 210002, Jiangsu Province, China. Tel: 86-25-8086-0092, Fax: 86-25-8481-5775, E-mail: [email protected] This is...