Case report: Reversible Fanconi syndrome due to vitamin D deficiency in a patient with epilepsy harbouring a pathogenic variant in the SLC34A1 gene - Improda, Nicola; Rosanio, Francesco Maria; Annicchiarico Petruzzelli, Luigi; Ambrosio, Gyusy; Malgieri, Gabriele; Mandato, Claudia; Licenziati, Maria Rosaria (Frontiers in Endocrinology, 2025)