Lupus anticoagulant, high levels of anticardiolipin, and anti-beta2-glycoprotein I antibodies are associated with chronic thromboembolic pulmonary hypertension - Martinuzzo, M E; Pombo, G; Forastiero, R R; Cerrato, G S; Colorio, C C; Carreras, L O (J Rheumatol, 1998)