Silva, I A PRISMA-driven systematic review for predictive risk factors of digital ulcers in systemic sclerosis patients. [electronic resource] - Autoimmunity reviews Feb 2015 - 140-52 p. digital Publication Type: Journal Article; Review; Systematic Review ISSN: 1873-0183 Standard No.: 10.1016/j.autrev.2014.10.009 doi Subjects--Topical Terms: Autoantibodies--immunologyHumansPractice Guidelines as TopicRisk FactorsScleroderma, Systemic--complicationsUlcer--etiologyVascular Endothelial Growth Factor A--immunology