Swearingen R, Sood A, Madi R, Klaassen Z, Badani K, Elder JS, Wood K, Hemal A, Ghani KR. Zero-fragment Nephrolithotomy: A Multi-center Evaluation of Robotic Pyelolithotomy and Nephrolithotomy for Treating Renal Stones. Eur Urol. 2017 12; 72(6):1014-1021.