1. Andrology Study Program, Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia
2. Department of Biomedical Sciences, Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia
3. Faculty of Medical Sciences of Minas Gerais, Belo Horizonte, Brazil
4. Bachelor Degree, Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia