title: Relationship between anxiety and dyspnea on exertion in patients with chronic obstructive pulmonary disease.
authors.affiliation: Center for Rehabilitation, University Medical Center Groningen, University of Groningen, Haren, RA, The Netherlands. j.n.de.voogd@cvr.umcg.nl
authors.forename: Jacob N
authors.initials: JN
authors.lastname: de Voogd
authors.forename: Robbert
authors.initials: R
authors.lastname: Sanderman
authors.forename: Klaas
authors.initials: K
authors.lastname: Postema
authors.forename: Eric
authors.initials: E
authors.lastname: van Sonderen
authors.forename: Johan B
authors.initials: JB
authors.lastname: Wempe