Authors: Ryan M Murphy; Ravi V Shah; Rajeev Malhotra; Paul P Pappagianopoulos; Stacyann S Hough; David M Systrom; Marc J Semigran; Gregory D Lewis Journal: Circulation Date: 2011-08-29 Impact factor: 29.690
Authors: Lyle J Olson; Adelaide M Arruda-Olson; Virend K Somers; Christopher G Scott; Bruce D Johnson Journal: Chest Date: 2007-12-10 Impact factor: 9.410