1. Department of Dermatology and Venereology, Faculty of Medicine Universitas Airlangga, Dr. Soetomo General Academic Hospital, Surabaya, Indonesia
2. Department of Dermatology and Venereology, Faculty of Medicine, Public Health and Nursing Universitas Gadjah Mada, Dr. Sardjito Hospital, Yogyakarta, Indonesia
3. Faculty of Civil and Environmental Engineering, Bandung Institute of Technology, Bandung, Indonesia
4. Bogor Agricultural University, Bogor, Indonesia