Central positional vertigo as first initial multiple sclerosis symptom: A case report with systematic review. - Meshref, Mostafa; Shaheen, Ahmed; Elmatboly, Abdelmagid M.; Hamdallah, Aboalmagd; Abdella, Walid Shaban; Amro, Yara; Khairat, Shiamaa M.; Swed, Sarya (Clinical Case Reports, 2022)