PROCOAC (PROspective COhort of A Coruña) description: Spanish prospective cohort to study osteoarthritis Natividad Oreiro-Villar; Ana C. Raga; Ignacio Rego-Pérez; Sonia Pértega; Maite Silva-Diaz; Mercedes Freire; Carlos Fernández-López; Francisco J. Blanco;

Serum chemerin in a cohort of Colombian patients with primary osteoarthritis Luis Javier Cajas Santana; Federico Rondón Herrera; Angela P. Rojas; Diego Javier Martínez Lozano; Nathalia Prieto; Martha Bohorquez Castañeda;

«Living with rheumatoid arthritis» in an indigenous qom population in Argentina. A qualitative study Rosana Quintana; Sofía Fernández; Stella M. Orzuza; Adriana M.R. Silvestre; Ana Bensi; Mario Goñi; Paola Iglesias; Nora Mathern; Vanina García-Bianco; Andrés Honeri; Bernardo A. Pons-Estel; Marcela Valdata; Ingris Peláez-Ballestas;