1. Faculty of Medicine, Universitas Sebelas Maret, Surakarta, Indonesia.
2. Doctoral Program on Public Health, Universitas Sebelas Maret, Surakarta, Indonesia.
3. Faculty of Public Health, Universitas Veteran Bangun Nusantara, Sukoharjo, Indonesia.
4. Department of Pathology Anatomy, Faculty of Medicine, Universitas Sebelas Maret, Surakarta, Indonesia.