The Effect of Vitamin D SNP FokI (rs2228570) and ApaI (rs7975232) on Axial Spondyloarthritis in Patients on Biological Treatment. mfm [Internet]. 2025 Oct. 24 [cited 2025 Dec. 26];36(9). Available from: https://medicalforummonthly.com/index.php/mfm/article/view/5408