“RISK FACTORS OF FUNCTIONAL CONSTIPATION AMONG THAI CHILDREN: Wannaporn Wanichsetakul and Anundorn Wongteerasut”. The Southeast Asian Journal of Tropical Medicine and Public Health 52, no. 2 (March 25, 2021): 191–202. Accessed November 16, 2025. https://journal.seameotropmednetwork.org/index.php/jtropmed/article/view/423.