ALVAREZ, Dellys Adriana; SUÁREZ ESCUDERO, Juan Camilo. Undifferentiated Spondyl Arthropathy, Ankylosing Spondylitis and Psoriatic Arthropathy. Clinical, diagnostic and radiological description. Medicina UPB, [S. l.], v. 25, n. 2, p. 171–183, 2006. Disponível em: https://revistas.upb.edu.co/index.php/medicina/article/view/2348. Acesso em: 13 aug. 2026.