ภมรพล ศิริพรรณ, and นุ่มพูล จารุณี. “Factors Predicting Constipation in Critically Ill Patients”. Journal of Thailand Nursing and Midwifery Council 34, no. 1 (February 8, 2019): 88–103. accessed September 18, 2026. https://he02.tci-thaijo.org/index.php/TJONC/article/view/152511.