Cellular basis for QT dispersion. Antzelevitch, C., Shimizu, W., Yan, G., & Sicouri, S. j-JE, 30(Suppl):168--75, 1998.
  author =       "C. Antzelevitch and W. Shimizu and G.X. Yan and S.
  title =        "Cellular basis for {QT} dispersion.",
  journal =      j-JE,
  year =         "1998",
  volume =       "30",
  number =       "Suppl",
  pages =        "168--75",
  robnote =      "The start of the T wave is caused by a more rapid
                 decline of the plateau, or phase 2 of the epicardial
                 action potential, creating a voltage gradient across
                 the wall. The gradient increases as the epicardial
                 action potential continues to repolarize, reaching a
                 maximum with full repolarization of epicardium; this
                 juncture marks the peak of the T wave. The next region
                 to repolarize is endocardium, giving rise to the
                 initial descending limb of the upright T wave. The last
                 region to repolarize is the M region, contributing to
                 the final segment of the T wave. LQTS",

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