1. Department of Dermatology, Asan Medical Center, Seoul, Korea.
2. Chicago College of Osteopathic Medicine, Midwestern University, Downers Grove, IL, USA.
3. Yemiwon Aesthetic Clinic, Seoul, Korea.
4. Department of Dermatology, Seoul National University College of Medicine, Seoul, Korea.
5. Sense Dermatologic Clinic, Seoul, Korea.