References
- AOAC. 2003a. Determination of cholecalciferol (vitamin D3) in selected food. AOAC official method 2002.05. In: W Horwitz. Official method of analysis of AOAC International. 17th ed. rev #2. Gaithersberg, MD: AOAC International.
- AOAC. 2003b. Determination of retinyl palmitate (vitamin A) in fortified fluid milk. AOAC official method 2002.06. In: W Horwitz. Official method of analysis of AOAC International. 17th ed. rev #2. Gaithersberg, MD: AOAC International.
- AOAC. 2003c. Appendix E. Laboratory quality assurance, In: W Horwitz. Official method of analysis of AOAC International. 17th ed. rev #2. Gaithersberg, MD: AOAC International.
- Clavo MS, Whiting SJ, Barton CN. Vitamin D intake: A global perspective of current status. J Nutr 2005; 135(2)310–316
- A Dawodu, M Agarwal, M Hossain, R. Zayed. 2002. A high prevalence of hypovitominosis D in exclusively breast feeding infants and mothers in summer: A justification for vitamin D supplementation, In: The Third Annual Research Conference at U.A.E. University. Available online at: http://sra.uaeu.ac.ae/Conference_3/sr1.swf, (accessed 18 February 2008).
- El Hag AI, Karrar ZA. Nutritional vitamin D deficiency rickets in Sudanese children. Ann Trop Paediatr Int Child Health 1995; 15: 69–76
- AT. Elidrissy. 1991. Rickets. In: PH Glorieux. Nestle Nutritional Workshop series. 31, New York: Raven Press. 223–231.
- Faulkner H, Hussein A, Foran M, Szijarto L. A survey of vitamin A and D contents of fluid milk in Ontario. J Dairy Sci 2000; 83: 1210–1216
- Hite DA. Determination of retinyl palmitate (vitamin A) in fortified fluid milk by liquid chromatography. J AOAC Int 2003; 86(2)375–385
- Holick MF. Vitamin D: Importance in the prevention of cancers, type 1 diabetes, heart disease and osteoporosis. Am J Clin Nutr 2004; 79: 362–371
- Holick MF, Shao Q, Liu WW, Chen TC. The vitamin D content of fortified milk and infant formula. N Engl J Med 1992; 326(18)1178–1181
- Institute of Medicine. 1997. Dietary reference intakes. Washington, DC: National Academy Press.
- Johnsson H, Hessel H. HPLC determination of cholecalciferol (vitamin D) in food. Int J Vitamin Nutr Res 1987; 59: 357–365
- Majid Molla A, Badawi MH, Al-Yaish S, Sharma P, El-salam RS, Molla AM. Risk factors for nutritional rickets among children in Kuwait. Pediatr Int 2000; 42: 280–284
- Murphy SC, Whited LJ, Rosenberry LC, Hammond BH, Bandler DK, Boor KJ. Fluid milk vitamin fortification compliance in New York State. J Dairy Sci 2001; 84: 2813–2820
- Norman A. Sunlight, season, skin pigmentation, vitamin D, and 25-hydroxyvitamin D: Integral component of the vitamin D endocrine system. Am J Clin Nutr 1998; 67: 1108–1110
- Staffas A, Nyman A. Determination of cholecalciferol (vitamin D3) in selected foods by liquid chromatography: NMKL collaborative study. J AOAC Int 2003; 86(2)400–406
- Tangpricha V, Koutkia P, Rieke SM, Chen TC, Perez AA, Holick MF. Fortification of orange juice with vitamin D: A novel approach for enhancing vitamin D nutritional health. Am J Nutr 2003; 77: 1478–1483
- Tanner JT, Smith J, Defibaugh P, Angyal G, Villalobos M, Bueno MP, McGarrahan ET, Wehr HM, Muniz JF, Hollis BW. Survey of vitamin content of fortified milk. J AOAC 1988; 71: 607–610
- WHO. 2003. Oil fortification: A simple and effective measure to eradicate vitamin A and D deficiency in the Eastern Mediterranean region. Regional Office for the Eastern Mediterranean, Cairo. Available online at: http://www.emro.who.int/oman/CooperationProgrammes-ICT-2002.htm, , (accessed 18 February 2008).