Sindhubodee, S., and N. Wongwattanasatien. “Usage of Paracetamol in Reducing Cystoscopy-Related Pain: A Prospective Study”. The Thai Journal of Urology, Vol. 34, no. 2, Dec. 2013, pp. 12-18, https://www.tci-thaijo.org/index.php/TJU/article/view/63140.