The clinical utility of faecal calprotectin in patients with differentiated and undifferentiated spondyloarthritis: Relevance and clinical implications Yasser Emad; Yasser Ragab; Nevin Hammam; Nashwa El-Shaarawy; Magdy Fawzi; Arwa Amer; Hesham El-Makhzangy; Ahmed Ismail; Ossama Ibrahim; Yosra Hassan; Ahmed Kamal; Johannes J. Rasker;

Elevated oxidative stress markers in patients with ankylosing spondylitis: A case¿control study Zouhour Gassara; Hela Fourati; Mariem Meseddi; Aida Elleuch; Afef Feki; Mohamed Hedi Kallel; Sofien Baklouti; Khansa Chaabouni; Fatma Ayadi;

Ranking the importance of their own diseases: A positioning analysis in rheumatic patients and their proxies Aldo Barajas-Ochoa; Elias Kaleb Rojero-Gil; Lilia Patricia Bustamante Montes; Cesar Ramos-Remus;