Cerebral blood flow changes during intermittent acute hypoxia in patients with heart failure - Mansur, Antonio P; Alvarenga, Glaura Souza; Kopel, Liliane; Gutierrez, Marco Antonio; Consolim-Colombo, Fernanda Marciano; Hajjar, Ludhmila Abrahão; Lage, Silvia Gelas (Journal of international medical research, 2018)