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Acknowledgement
I am grateful for the critical comments of Ruben Coronel, Michiel J. Janse, Loet Leydesdorff and Arthur Wilde.
Post-scriptum
After acceptance of this Editorial Comment, I noticed that JACC also published such ‘Highlights of the year’ in the years 2005–2011 and recently in 2013, each time primarily referring to papers published during the previous year. The total number of references in these ‘Highlights’ gradually increased from 107 in 2005 to 292 in 2012 (see above). The 2013 ‘version’ had 261 references.
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Opthof, T. Inflation of impact factors by journal self-citation in cardiovascular science. Neth Heart J 21, 163–165 (2013). https://doi.org/10.1007/s12471-013-0384-0
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DOI: https://doi.org/10.1007/s12471-013-0384-0