1. [CDC] Centers for Disease Control and Prevention National Center for Health Statistics (NCHS). National Health and Nutrition Examination Survey Data U.S. Dept. of Health and Human Services, Centers for Disease Control and Prevention [1999-2004] http://www.cdc.gov/nchs/nhanes.htm
2. Health Canada, Canadian Nutrient File 2007 http://www.heathcanada.ca/cnf
3. Chung M Balk EM Brendel M Ip S Lau J Lee J Lichtenstein A Patel K Raman G Tatsioni A Terasawa T Trikalinos TA 2009 Vitamin D and Calcium: Systematic Review of Health Outcomes. Evidence Report/Technology Assessment No. 183. (Prepared by Tufts Evidence-based Practice Center under Contract No. 290-2007-10055-I). AHRQ Publication No. 09-E015, Rockville, MD: Agency for Healthcare Research and Quality
4. Ready-to-eat cereal consumption: its relationship with BMI and nutrient intake of children aged 4 to 12 years;Albertson;J Am Diet Assoc,2003