Residence at high altitude as a risk factor for high probability of pulmonary hypertension in patients with systemic sclerosis: A case¿control study Luis Javier Cajas; Julia Recalde Reyes; Javier Alejandro Correa; Wilder Carvajal; Carolina Torres; José S. Cortés;

Evaluation of the efficacy and safety of gravitational therapy in a cohort of patients with systemic sclerosis Luisa Fernanda Servioli; Eugenia Isasi; Alejandra Pérez; Silvia Pouquette; María Eloísa Isasi;

Interaction between angiotensin-converting enzyme gene rs4343 polymorphism, environment factors, and angiotensin II level on susceptibility to knee osteoarthritis Basma Mohammed Mohammed Ali Elnaggar; Nashwa Mohamed Abd Elbaky; Eman Salah Albeltagy; Hala Mohamed El Zomor;