1. Department of Dermatology, Seoul National University College of Medicine, Seoul, Republic of Korea
2. Institute of Human–Environment Interface Biology, Seoul National University, Seoul, Republic of Korea
3. Laboratory of Cutaneous Aging and Hair Research, Clinical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea
4. Joseph J. Zilber School of Public Health, University of Wisconsin–Milwaukee, Milwaukee
5. Department of Dermatology, Stanford University, Stanford, California