EL-Nahas, A. R., Shokeir, A. A., Shoma, A. M., Eraky, I., Sarhan, O. M., Hafez, A. T., Dawaba, M. S., Elshal, A. M., Ghali, A. M. and EL-Kenawy, M. R. (2014) “Percutaneous nephrolithotomy versus open surgery for treatment of staghorn stones in pediatric patients”, Canadian Urological Association Journal, 8(11-12), pp. e906–9. doi: 10.5489/cuaj.1994.