title: Human biological pacemakers: intrinsic variability and stability.
authors.forename: Crystal M
authors.initials: CM
authors.lastname: Ripplinger
authors.forename: Donald M
authors.initials: DM
authors.lastname: Bers
mesh_terms: D053595:Embryonic Stem Cells / Q000166:cytology*; D006339:Heart Rate; D006801:Humans; D057026:Induced Pluripotent Stem Cells / Q000166:cytology*; D032383:Myocytes, Cardiac / Q000502:physiology*