Al-Zayadneh, E., Al-Bitar, M., Al-Ani, A., Saadeh, A., Al-Oqaily, W., Yameen, A.-R., Al Shamasneh, M. and AL-Iede, M. 2021. Clinical characteristics of asthmatic children with Vitamin D deficiency at Jordan University Hospital: A retrospective study. Jordan Medical Journal. 55, 4 (Dec. 2021).