TY - JOUR AU - Aydin, S Z; Karadag, O; Filippucci, E TI - Monitoring Achilles enthesitis in ankylosing spondylitis during TNF-alpha antagonist therapy: an ultrasound study JO - Rheumatology (Oxford) VL - 49 PY - 2010 DO - 10.1093/rheumatology/kep410 L3 - PubMed-ID: 20040527 SP - 578 EP - 582 N1 - et al. ER -