Leow, J. J., A.-S. Valiquette, B. I. Chung, S. L. Chang, Q.-D. Trinh, R. Korets, and N. Bhojani. “Costs Variations for Percutaneous Nephrolithotomy in the U.S. From 2003–2015: A Contemporary Analysis of an All-Payer Discharge Database”. Canadian Urological Association Journal, vol. 12, no. 12, June 2018, doi:10.5489/cuaj.5280.