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In the originally published version of this manuscript, the names of authors Marcio Jansen de Oliveira Figueiredo and Manlio F. Márquez were incorrectly given. Both names have now been corrected online. In addition, the following affiliation was inadvertently omitted for author Manlio F. Márquez: Cardiology, Electrophysiology Service, American British Cowdray Medical Center, Mexico City, México This affiliation has now been added to the online version of the manuscript as affiliation 27 and all subsequent affiliations in this manuscript affected by this change have been updated accordingly.
Svennberg et al. (Thu,) studied this question.