Ratanasuwan Yimyaem, Panaratana, and Wattana Tantanatewin. 2013. “Patient Satisfaction With Postoperative Pain Management at Recovery Room in Srinagarind Hospital”. Srinagarind Medical Journal 21 (1):17-22. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/13202.