Baumert, Mathias, Porta, Alberto, Vos, Marc A., Malik, Marek, Couderc, Jean-Philippe, Laguna, Pablo, Piccirillo, Gianfranco, Smith, Godfrey L., Tereshchenko, Larisa G. and Volders, Paul G.A.  (2016)  QT interval variability in body surface ECG: measurement, physiological basis, and clinical value: position statement and consensus guidance endorsed by the European Heart Rhythm Association jointly with the ESC Working Group on Cardiac Cellular Electrophysiology.   Europace, 18(6),  pp. 925-944.   (doi: 10.1093/europace/euv405) (PMID:26823389)  (PMCID: PMC4905605)