title: The Journal of Cardiology receives its first impact factor.
authors.forename: Atsushi
authors.initials: A
authors.lastname: Hirayama
authors.forename: Chuwa
authors.initials: C
authors.lastname: Tei
mesh_terms: D002309:Cardiology / Q000458:organization & administration*; D007564:Japan; D055811:Journal Impact Factor; D010506:Periodicals as Topic / Q000639:trends