Unravelling the genetic landscape of multiple sclerosis in the Tunisian population: focus on VDR and IL7 variants. - Alaya, Faten; Achouri, Afef; Jamoussi, Hela; Fray, Saloua; Ben Mahmoud, Mariem; Ben Ali, Nadia; Hannachi Salhi, Amel; Baraket, Ghada (Egyptian Journal of Neurology, Psychiatry & Neurosurgery, 2026)