Hanan M. Hamed, Manal F. Elshamaa, Iman A. S. Khalifa, Manal E. Kandil, Solaf Kamel, Dina Kandil, and Hebatallah Farouk. “Association Between Vitamin D Receptor Genes Polymorphisms With Systemic Lupus Erythematosus in Children”. Journal of Innovations in Pharmaceutical and Biological Sciences, vol. 4, no. 4, Oct. 2017, pp. 162-9, https://jipbs.com/index.php/journal/article/view/274.