Von Willebrand factor antigen and sera VEGF were assayed to provide a marker of endothelial injury.22 Von Willebrand concentration was determined by ELISA (VIDAS von Willebrand, BioMérieux, Marcy ...

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Objective Systemic sclerosis-associated pulmonary arterial hypertension differs from idiopathic pulmonary arterial hypertension with respect to histopathology, treatment responses and survival.