1. Determinants of low birth weight: methodological assessment and meta-analysis;MS Kramer,1987
2. World Health Organization. Meeting of Advisory Group on Maternal Nutrition and Low Birthweight Genebra: WHO; 2002 Internet: http://www.who.int/nutrition/topics/lbw_strategy_background.pdf (accessed 23 august 2017).
3. Risk factors for underweight at birth;IB Moraes,2001
4. Low Birthweight: Country,regional and global estimates,2004
5. Adverse perinatal outcomes associated with moderate or severe maternal anaemia based on parity in Finland during 2006–10;S Raisanen,2014