Siddika, A.; Alam, M. S.; Khan, M. R.; Siddika, L.; Sharmin, R.; Nahid, A.; Khan, R. M. Serum 25-Hydroxy Vitamin D Level in Patients With Alopecia Areata and Its Relationship With Severity of the Disease. J Dhaka Med Coll 2025, 32, 100-106.