Vol. 29, No. 2, 2017 247 Received August 24, 2015, Revised April 7, 2016, Accepted for publication April 10, 2016 Corresponding author: Kui Young Park, Department of Dermatology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul 06973, Korea. Tel: 82-2-6299-1525, Fax: 82-2-823-1049, E-mail: momo920@hanmail.net This is an Open Access arti...