Shi S, Feng J, Zhou L, Li Y, Shi H. Risk Factors for Vitamin D Deficiency in Inflammatory Bowel Disease: A Systematic Review and Meta-Analysis. Turkish Journal of Gastroenterology [Internet]. 2021 Jan. 6 [cited 2026 Jan. 1];32(6):508-1. Available from: https://www.turkjgastroenterol.org/index.php/tjg/article/view/3742