TY - JOUR AU - Londoño Patiño, John Darío AU - Calvo Páramo, Enrique AU - Porras, Marlon AU - Valle Oñate, Rafael PY - 2010 UR - http://hdl.handle.net/10818/33198 AB - Background: Different Spondylarthritis (SpA) presentation pattern have been described in Latin American countries. The Undiferentiated Spondylarthritis (uSpA) and Reactive Arthritis (ReA) forms are frequent (about 75%), whereas Ankylosing Spondylitis... LA - eng PB - Arthritis & Rheumatology TI - The New ASAS Classification Criteria For Axial And Peripheral Spondylarthritis: Valid In The Latin American Patients, But ER -