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Tawfik, Ahmad M., Ahmed S. El-Abd, Mohamed Abo El-Enen, Yasser A. Farahat, Mohamed A. El-Bendary, Osama M. El-Gamal, Mohamed G. Soliman, Abdelhameed M. El-Bahnasy, and Mohamed Rasheed. "Validity of a Sponge Trainer As a Simple Training Model for Percutaneous Renal Access." Arab J Urol 2017.

Tawfik, Ahmad M., et al. "Validity of a Sponge Trainer As a Simple Training Model for Percutaneous Renal Access." Arab J Urol 2017.