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. 2015 Apr 27;10(4):e0125639. doi: 10.1371/journal.pone.0125639

Fig 1. Representative Poincaré plots of a control individual and a patient with acromegaly.

Fig 1

Note the larger area covered by data points obtained in the acromegalic patient illustrating increased short-term variability of the QT interval. Abbreviations: QTc, corrected QT interval by Bazett formula; STVQT, short-term variability of the QT interval.