Comparison of Stone Scoring Systems in Predicting Outcomes of Percutaneous Nephrolithotomy in Patients with Solitary Kidney Journal title: Journal of Urological Surgery Authors: Volkan Çağlayan, Sedat Öner, Efe Önen, Sinan Avcı, Metin Kılıç, Uğur Akgün Subject(s): Medicine, Nephrology, Urology, Surgery