Effects of extracorporeal circulation (ec) on lung mechanical properties: a comparative study between bubble (b) and menbrane (m) oxigenators - Jatene, Fábio Biscegli; Auler Júnior, José Otávio Costa; Hoelz, C; Negri, E M; Zin, W A; Saldiva, Paulo Hilário Nascimento; Jatene, Adib (World Congress on Disease of the Chest, 1989)