RT Journal Article SR Electronic T1 In Search of Maximum Inspiratory and Expiratory Pressure Reference Equations JF Respiratory Care FD American Association for Respiratory Care SP 1304 OP 1305 VO 54 IS 10 A1 Marcy F Petrini A1 Demondes Haynes YR 2009 UL http://rc.rcjournal.com/content/54/10/1304.abstract AB