E. H. Weaver,L. Gibbons,J. M. Belizán and F. Althabe. The increasing trend in preterm birth in public hospitals in northern Argentina. Int J Gynaecol Obstet. 2015;130(2):10.1016/j.ijgo.2015.02.026.
E. H. Weaver,L. Gibbons,J. M. Belizán and F. Althabe. The increasing trend in preterm birth in public hospitals in northern Argentina. Int J Gynaecol Obstet. 2015;130(2):10.1016/j.ijgo.2015.02.026.