Youngkyoung Lim1, Ji-Hye Park1, Seung Hee Kang2, Jong Hee Lee1,3. 1. Department of Dermatology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea. 2. Leaders Clinic & Skin Care, Seoul, South Korea. 3. Department of Medical Device Management & Research, SAIHST, Sungkyunkwan University, Seoul, South Korea.