1. Department of Urology, Faculty of Medicine, Universitas Syiah Kuala, Dr. Zainoel Abidin General Hospital, Banda Aceh, Indonesia.
2. Department of Science, Universitas Brawijaya, Malang, Indonesia.
3. Department of Clinical Pathology, Faculty of Medicine, Universitas Syiah Kuala, Dr. Zainoel Abidin General Hospital, Banda Aceh, Indonesia.
4. Department of Urology, Faculty of Medicine, Universitas Padjadjaran, Hasan Sadikin Hospital, Bandung, Indonesia.