Arunakul P, Ruangprach T. Efficacy and Safety of Intrathecal Morphine in Patients Underwent Foot and Ankle Surgery; A Retrospective Study. AMJAM [Internet]. 2022 Aug. 1 [cited 2025 Apr. 4];22(-):S123. Available from: http://18.141.44.152/index.php/amjam/article/view/1302