1. Zagazig University, Urology, 42 Mostafa Foad St.-Manshiet Abaza, Zagazig, Egypt, 44511;
2. Zagazig University, urology, zagazig, Egypt;
3. Zagazig university hospital, Urology , Egypt -sharkia, Zagazig, Zagazig , Sharkia, Egypt, 44111;
4. Zagazig University Faculty of Human Medicine, 68865, urology, Al-Sharqia, Zagazig, Bahr street, Zagazig, Egypt, Zagazig, Egypt, 44519, EGYPT;