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
Servicio de Cardiología, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Hospital General Universitario Gregorio Marañón, Madrid, Spain
b
Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Spain
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