1. Faculty of Medicine, Universitas Andalas, Indonesi
2. Department of Forensic and Medicolegal, RSUP Dr. M. Djamil Padang/Faculty of Medicine Universitas Andalas, Indonesia.
3. Department of Clinical Pathology and Laboratory Medicine, RSUP Dr. M. Djamil Padang/Faculty of Medicine Universitas Andalas, Indonesia.
4. Department of Child Health, RSUP Dr. M. Djamil Padang/Faculty of Medicine Universitas Andalas, Indonesia.
5. Department of Public Health and Community Medicine, RSUP Dr. M. Djamil Padang/Faculty of Medicine Universitas Andalas, Indonesia.