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Department of Health (1991). Dietary Reference Values for Food Energy and Nutrients for the United Kingdom. London: H.M. Stationery Office.Google Scholar
Naismith, D. J. (1977). In Scientific Foundations of Obstetrics and Gynaecology, pp 503–511 [Phillipp, E. E., Barnes, J. and Newton, M., editors]. London: Heinemann.Google Scholar
National Academy of Sciences (1989). Recommended Dietary Allowances, 10th edition. Washington DC: National Academy Press.Google Scholar