Tantanatip, P., and M. Asawachintachit. “Additional Pain Control During Extracorporeal Shockwave Lithotripsy (ESWL) Using Etoricoxib, Randomized-Control Trial”. Insight Urology, vol. 37, no. 2, Dec. 2016, pp. 29-35, https://he02.tci-thaijo.org/index.php/TJU/article/view/74206.