1. Department of Surgery; Beckman Laser Institute and Medical Clinic; University of California, Irvine; Irvine CA U.S.A
2. The Third Xiangya Hospital; Xiangya School of Medicine; Central South University; Changsha Hunan 412000 China
3. Department of Dermatology; Xijing Hospital; Fourth Military Medical University; Xi'an 710032 China
4. Department of Dermatology; The Second Hospital of Shanxi Medical University; Taiyuan 030001 China
5. Shandong Provincial Institute of Dermatology and Venereology; Jinan Shandong 250022 China
6. Department of Dermatology; Brigham and Women's Hospital; Harvard Medical School; Boston MA 02115 U.S.A
7. Department of Obstetrics and Gynecology; University of California, Irvine; Irvine CA U.S.A
8. Department of Biomedical Engineering; University of California, Irvine; Irvine CA U.S.A