Thamjamrassri, T. (2018) “Low-dose Spinal Bupivacaine decreases the Incidence of Postoperative Urinary Retention after Anorectal Surgery”, Thai Journal of Anesthesiology, 44(1), pp. 30–35. available at: https://he02.tci-thaijo.org/index.php/anesthai/article/view/121104 (accessed: 3 October 2026).