1. Haematology of pregnancy;Longmuir;Medicine,2013
2. World Health Organization. Iron deficiency anaemia: assessment, prevention and control: a guide for programme managers; 2001.
3. World Health Organization. Worldwide prevalence of anaemia 1993–2005: WHO global database on anaemia; 2008.
4. Encuesta nacional de salud y nutrición 2012. Resultados nacionales;Gutierrez,2012
5. Etiology of anemia in pregnancy in south Malawi;Van den Broek;Am J Clin Nutr,2000