Subclinical hip involvement in rheumatoid arthritis. An ultrasound assessment Vladimir Aroja Santos; Jessica Gutiérrez; Hugo Sandoval; Araceli Bernal-González; Melisa Valdivieso-Ruiz; Sandra Rodríguez-Flores; Mariana Moreno Ramírez; Aarón Daniel Antonio Arrieta Aguilar; Marwin Gutiérrez; Carlos Pineda;

Description of a tele-rheumatology service in a Colombian institution Luis Javier Cajas Santana; Josué Guillermo López;

Inadequate sleep as a limiting factor in achieving remission in patients with rheumatoid arthritis Amarilis J. Pérez De Jesus; Nahir S. Pérez Soto; Miguel A. Vázquez Padua;