1. Andrieu E, Darmon N, Drewnowski A (2006). Low-cost diets: more energy, fewer nutrients. Eur J Clin Nutr 60, 434–436.
2. Anonymous (1998). Zo eet Nederland: resultaten van de Voedselconsumptiepeiling 1997–1998. Den Haag: Voedingscentrum. (Results of the Dutch National Food Consumption Survey 1987–1998: in Dutch).
3. Brunvand and Brunvatne (2001). Health problems among immigrant children in Norway. Tidsskr Nor Laegeforen 121, 715–718. (in Norwegian).
4. Brussaard JH, van Erp-Baart MA, Brants HA, Hulshof KF, Löwik MR (2001). Nutrition and health among migrants in The Netherlands. Public Health Nutr 4, 659–664.
5. Chung M, Balk EM, Brendel M, Ip S, Lau J, Lee J et al. (2009). Vitamin D and Calcium: A Systematic Review of Health Outcomes. Evidence Report No. 183. (Prepared by the Tufts Evidence-based Practice Center under Contract No. HHSA 290-2007-10055-I.) AHRQ Publication No. 09-E015. Rockville, MD: Agency for Healthcare Research and Quality.