Altınay Göksel Karatepe, Taciser Kaya, Muhteşem Gedizoğlu, Rezzan Günaydın, and Salih Ürper. 2006. “Coexistence of Ankylosing Spondylitis and Multiple Sclerosis: A Case Report”. Archives of Rheumatology 21 (3):114-17. http://www.anadolupsikiyatri.net/index.php/pub/article/view/207.