Association between hypothyroidism and elderly-onset rheumatoid arthritis: A cross-sectional study at national hospital in Peru Paul J. Tejada-Llacsa; Vidia Lumbe Diaz; Carlos Diaz-Arocutipa;

Anticuerpos anti-RNA polimerasa III en esclerosis sistémica: estudio multicéntrico de Argentina María de los Ángeles Gargiulo; Nicolás Pérez; Marina Khoury; Manuel Buhl; Lorena Suárez; Judith Sarano; Fabiana Montoya; Ignacio Bazzalo; Sandra Navarro; Gisela Pendón; María Josefina Molina; Marta Mamani; Mariano Rivero; Graciela Gómez;

Survival of first line biological and targeted synthetic disease-modifying anti-rheumatic drugs in patients with rheumatoid arthritis in Chile Marcos Cruces Olivar; Allan D. Burboa; Yolanda M. Gómez;