Marwick TH, Chandrashekhar Y, Achenbach S, Dilsizian V, Fayad ZA, Finn AV, Hundley WG, Kern MJ, Kramer CM, Sengupta PP, Shaw LJ, Zoghbi WA, Narula J. Bibliographic metrics at JACC: cardiovascular imaging an opportunity for audit and reflection. JACC Cardiovasc Imaging. 2011 Sep; 4(9):1050-1.