Comparison of Lung Expansion Techniques on Thoracoabdominal Mechanics and Incidence of Pulmonary Complications After Upper Abdominal Surgery: A Randomized and Controlled Trial - Lunardi, Adriana C.; Paisani, Denise M.; Silva, Cibele C. B. Marques da; Cano, Desiderio P.; Tanaka, Clarice; Carvalho, Celso R. F. (CHEST, 2015)