Vitamin D Deficiency in Relapsing Idiopathic Nephrotic Syndrome in Children: Prevalence, Correlates, and Therapeutic Implications. - Zamani, Seyedeh Asma; Abbasi, Arash; Bazargani, Behnaz; Askarian, Fahimeh; Fahimi, Daryoush; Moghtaderi, Mastaneh; Saleem, Suraiya (International Journal of Endocrinology, 2025)