Bakri, Adla H, Taysir S Garadah, ahmed A jaradat, Abdulla Al Ajmi, Mohamed E Alawi, and Reggy R Sequeira. 2013. “Prevalence of Vitamin D Deficiency in Patients With Sickle Cell Disease in Bahrain”. International Journal of Medicine 1 (2): 23-28. https://doi.org/10.14419/ijm.v1i2.1126.