1Huo KM, Zhao YS, Feng HQ, et al. Mortality rates of children aged under five in Henan province, China,2004 - 2008 [ J ]. Paediatr Perinat Epidemiol,2010,24(4) :343 -348.
3Mmbaga BT, Lie RT, Olomi R, et al. Cause-specific neonatal mortality in a neonatal care unit in Northern Tanzania:a reg- istry based cohort study [J]. BMC Pediatrics, 2012, 12 (116) :1 -10.
