1 Division of Dermatology, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
2 Division of Dermatology, Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.
3 Department of Pathology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
4 Division of Gynecologic Pathology and Cytology, Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.