1. Master Program of Skin Ageing and Aesthetic Medicine, Faculty of Medicine, Universitas Kristen Maranatha, Bandung, West Java 40164, Indonesia
2. Department of Physiology, Faculty of Medicine, Universitas Kristen Maranatha, Bandung, West Java 40164, Indonesia
3. Department of Histology, Faculty of Medicine, Universitas Kristen Maranatha, Bandung, West Java 40164, Indonesia
4. Physiology Division, Department of Biomedical Sciences, Faculty of Medicine, Universitas Padjadjaran, Sumedang, West Java 45363, Indonesia