Tobin M J, Jubran A, Laghi F
Division of Pulmonary and Critical Care Medicine, Edward Hines, Jr., Veterans Affairs Hospital and Loyola University of Chicago Stritch School of Medicine, Hines, Illinois, USA.
Am J Respir Crit Care Med. 2001 Apr;163(5):1059-63. doi: 10.1164/ajrccm.163.5.2005125.