1. Milman N. Iron and pregnancy—a delicate balance. Ann Hematol. 2006;85:559–65.
2. Institute of Medicine (US) Panel on Micronutrients. Dietary reference intakes: vitamin A, vitamin K, arsenic, boron, chromium, copper, iodine, iron, manganese, molybdenum, nickel, silicon, vanadium, and zinc. Washington: National Academy Press; 2001. http://www.nap.edu/read/10026/chapter/11 . Accessed 09 Mar 2016.
3. FAO/WHO expert consultation. Human vitamin and mineral requirements. Rome: FAO Food and Nutrition Division; 2001. http://www.fao.org/docrep/004/y2809e/y2809e0j.htm#bm19 . Accessed 09 Mar 2016.
4. Brasil. Assistência Integral à Saúde da Mulher: Base de Ações Programáticas. Brasília: Ministério da Saúde; 1985. http://bvsms.saude.gov.br/bvs/publicacoes/assistencia_integral_saude_mulher.pdf . Accessed 09 Mar 2016.
5. Brasil. Manual Operacional: Programa Nacional de Suplementação de Ferro. Brasília: Ministério da Saúde; 2005. http://189.28.128.100/dab/docs/portaldab/publicacoes/manual_ferro.pdf . Accessed 09 Mar 2016.