title: One more time: bibliometric analysis of scientific output remains complicated.
authors.affiliation: Department of Clinical and Experimental Cardiology, Heart Failure Research Center, Academic Medical Center, Meibergdreef 9, Room K2-105, 1105, AZ, Amsterdam, the Netherlands, t.opthof@inter.nl.net.
authors.forename: T
authors.initials: T
authors.lastname: Opthof
authors.forename: A A M
authors.initials: AA
authors.lastname: Wilde