Thanakhon, Chettha, and Vorapot Choonhaklai. “Association of Infundibulopelvic Angle, Infundibuum Width, Infundibulum Length and Lower Pole Ratio on Stone Clearance After Shock Wave Lithotripsy”. The Thai Journal of Urology 37, no. 2 (December 31, 2016): 19-28. Accessed October 20, 2019. https://www.tci-thaijo.org/index.php/TJU/article/view/74205.