Secular trend of very low birth weight rate in Porto Alegre, Southern Brazil

Citation:
da Silva, CH, Agranonik M, da Silva AAM, Bettiol H, Barbieri MA, Goldani MZ.  2009.  Secular trend of very low birth weight rate in Porto Alegre, Southern Brazil. Journal of Biosocial Science. :1-11.

doi: 10.1017/S002193200999037X