Aziz MA, Syahbana CG, Effendi JS, Purwara BH, Madjid TH, Susiarno H. Vitamin D Levels and Incidence of Preterm Labor. MKB [Internet]. 2024 Mar. 30 [cited 2026 Jul. 7];56(1):52-7. Available from: https://stable.unpadmedjournals.id/index.php/mkb/article/view/3070