title: Letter by Morris et al regarding article, "Low heart rates predict incident atrial fibrillation in healthy middle-aged men" by Grundvold et al.
authors.affiliation: Department of Cardiology Royal Melbourne Hospital Victoria, Australia.
authors.forename: Gwilym M
authors.initials: GM
authors.lastname: Morris
authors.forename: Jonathan M
authors.initials: JM
authors.lastname: Kalman
authors.forename: Mark R
authors.initials: MR
authors.lastname: Boyett
mesh_terms: D001281:Atrial Fibrillation / Q000453:epidemiology*; D006339:Heart Rate; D006801:Humans; D008297:Male