Final analysis of a 14-year long-term follow-up study of the effectiveness and immunogenicity of the quadrivalent human papillomavirus vaccine in women from four nordic countries oleh Susanne K. Kjaer, Mari Nygård, Karin Sundström, Joakim Dillner, Laufey Tryggvadottir, Christian Munk, Sophie Berger, Espen Enerly, Maria Hortlund, Ágúst Ingi Ágústsson, Kaj Bjelkenkrantz, Katrin Fridrich, Ingibjorg Guðmundsdóttir, Sveinung Wergeland Sørbye, Oliver Bautista, Thomas Group, Alain Luxembourg, J. Brooke Marshall, David Radley, Yi Shen Yang, Cyrus Badshah, Alfred Saah