title: Causes of breathing inefficiency during exercise in heart failure.
authors.affiliation: Division of Cardiovascular Disease, Mayo Clinic, Rochester, MN 55902, USA. woods.paul@mayo.edu
authors.forename: Paul R
authors.initials: PR
authors.lastname: Woods
authors.forename: Thomas P
authors.initials: TP
authors.lastname: Olson
authors.forename: Robert P
authors.initials: RP
authors.lastname: Frantz
authors.forename: Bruce D
authors.initials: BD
authors.lastname: Johnson