1. Department of Dermatology, Qianfoshan Hospital, Shandong University, Jinan, Shandong, People's Republic of China
2. Department of Clinical Medicine, Queen Mary School, Medical School, Nanchang University, Nanchang, Jiangxi, People's Republic of China
3. Department of Clinical Medicine, Taishan Medical College, Tai'an, Shandong, People's Republic of China