TY - JOUR A1 - Martin, J.A. A1 - Hamilton, B.E. A1 - Osterman, M.J. A1 - Curtin, S.C. A1 - Matthews, T.J. T1 - Births: Final data for 2013 Y1 - 2015 JF - National Vital Statistics Report VL - 64 IS - 1 ER -