Spinal Anesthesia for Emergency Cesarean Section in a Parturient with Coexisting Myasthenia Gravis, Ankylosing Spondylitis, and Multiple Sclerosis: A Rare Case Report and Structured Anesthetic Approach. Journal of Anesthesiology and Clinical Research, v. 7, n. 2, p. 1383–1398, 27 Jul.2026.