Yeldu, Mohammed Haruna, Mohammed Danjuma, Mainasara Abdullahi Sulaiman, Jiya Nma Muhammad, Garba Balkisu Illah, Yakubu Ibrahim, and Buhari Shehu. 2019. “Serum Vitamin D Status and Biochemical Parameters of Asthmatic Children in Sokoto Metropolis, North-Western Nigeria”. Asian Journal of Medical Sciences 11 (2):64-70. https://doi.org/10.3126/ajms.v11i2.26772.