Usawachintachit, M., and S. Ratchanon. “Factors Associated With Persisted Fever More Than 24 Hours After Percutaneous Nephrolithotomy”. Insight Urology, vol. 32, no. 2, Dec. 2011, pp. 55-61, https://he02.tci-thaijo.org/index.php/TJU/article/view/252776.