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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

Subclinical interstitial lung disease in patients with systemic sclerosis. A pilot study on the role of ultrasound Samuel Reyes-Long, Marwin Gutierrez, Denise Clavijo-Cornejo, Alfonso Alfaro-Rodríguez, Karen González-Sámano, José Luis Cortes-Altamirano, Roberto Muñoz-Louis, Esteban Cruz-Arenas, Katia Camargo, Fernanda Gonzalez, Chiara Bertolazzi