The impact factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years.
a
Sección de Arritmias, Servicio de Cardiología, Hospital del Mar, Barcelona, Spain
b
Institut Hospital del Mar d’Investigacions Mèdiques (IMIM), Barcelona, Spain
c
Harvard-Thorndike Electrophysiology Institute, Cardiovascular Division, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachussets, United States
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