Surfactant alterations in severe pneumonia, acute respiratory distress syndrome, and cardiogenic lung edema - Günther, A; Siebert, C; Schmidt, R; Ziegler, S; Grimminger, F; Yabut, M; Temmesfeld, B; Walmrath, D; Morr, H; Seeger, W (Am J Respir Crit Care Med, 1996)