Measurement of overall perceived health using different scales in patients with rheumatoid arthritis: a proposal of a combined scale Eybar Díaz; Javier Cajas; Alex Casallas; Jorge Abella; Renan Morales; Federico Rondón; Gerardo Quintana; Antonio Iglesias; Yimy Medina;

Diagnostic error as a scientific and ethical challenge in establishing the activity of rheumatoid arthritis Yimy F. Medina; Álvaro J. Ruiz;

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;