Exploring the prevalence and factors associated with fatigue and quality of life in patients with Ankylosing Spondylitis oleh A. Feki, Y. Mejdoub, I. Sellami, I. Mnif, Z. Gassara, S. Bendjmaa, M. Ezzeddine, M. H. Kallel, H. Fourati, R. Akrout, M. L. Masmoudi, S. Yaiich, S. Baklouti