Effects of low doses of inhated nitric oxide combined with oxygen for the evaluation of pulmonary vascular reactivity in patients with pulmonary hypertension - Azeka, E.; Auler Júnior, José Otávio Costa; Kajita, L.; Alliman, A. C.; Ramires, José Antônio Franchini; Ebaid, Munir (Pediatric Cardiology, 2001)