Jennuvat, Siriluck, Siwarode Khanom, Noparat Prachasitthisak, and Niyada Vithayasai. “Prevalence of Vitamin D deficiency in Pediatric Inflammatory Bowel Disease: A Retrospective Study at Queen Sirikit National Institute of Child Health”. Journal of The Department of Medical Services 48, no. 3 (September 15, 2023): 67–74. accessed September 24, 2026. https://he02.tci-thaijo.org/index.php/JDMS/article/view/260718.