Prutsakul, Sirichai, Patkawat Ramart, Amphai Uraiverotchanakorn, Chaiyong Nualyong, Sunai Leewansangtong, Sittiporn Srinualnad, Tawatchai Taweemonkongsap, Banasithi Chaiyaprasithi, Teerapon Amornvesukit, Siros Jitpraphai, Kittipong Phinthusophon, Suchai Soontrapa, and Phichaya Sujijantararat. 2013. “Aluminium Step Wedge As a Measurement to Predict the ESWL Success Rate for Solitary Upper Urinary Tract Stone”. Insight Urology 34 (2):19-28. https://he02.tci-thaijo.org/index.php/TJU/article/view/63141.