[5] Nimse SB, Pal D. Free radicals, natural antioxidants, and their reaction mechanisms. RSC Advances. 2015;5(35):27986-28006. DOI: 10.1039/ c4ra13315c
[6] National Coordinating Committee on Food and Nutrition N. RNI Recommended Nutrient Intakes for Malaysia. A report of the Technical Working Group on Nutritional Guidelines. Malaysia: Ministry of Health Malaysia (MOH); 2017
[7] West KP, Darnton-Hill I. Vitamin A deficiency. In: Semba RD, Bloem MW, editors. Nutrition and Health in Developing Countries. 2nd ed. New Jersey, USA: Humana Press; 2008. pp. 377-433 Â Â Â Â
[8] Semba RD. Vitamin A and immunity to viral, bacterial and protozoan infections. Proceedings of the Nutrition Society. 1999;58(3):719-727. DOI: 10.1017/S0029665199000944
[9] West CE, Rombout JHWM, Zijpp AJVD, Sijtsma SR. Vitamin A and immune function. Proceedings of the Nutrition Society. 1991;50(2):251-262. DOI: 10.1079/PNS19910035
[10] Sommer A. Vitamin A, Infectious disease, and childhood mortality: A 2 solution? The Journal of Infectious Diseases. 1993;167(5):1003-1007. DOI: 10.1093/infdis/167.5.1003
[11] Sherwin JC, Reacher MH, Dean WH, Ngondi J. Epidemiology of vitamin A deficiency and xerophthalmia in at-risk populations. Transactions of the Royal Society of Tropical Medicine and Hygiene. 2012;106(4):205-214. DOI: 10.1016/j.trstmh.2012.01.004
[12] Whitcher JP, Srinivasan M, Upadhyay MP. Corneal blindness: A global perspective. Bulletin of the World Health Organization. 2001;79:214-221
[13] Organization WH. Vitamin A Deficiency and Xerophthalmia: Report of a Joint WHO/USAID Meeting. Vitamin A Deficiency and Xerophthalmia: Report of a Joint WHO/USAID Meeting. Geneva: World Health Organization; 1976 Â Â Â Â Â Â Â Â Â Â
[14] McLaren DS, Kraemer K. Manual on Vitamin a Deficiency Disorders (VADD). 3rd ed. Switzerland: Karger Medical and Scientific Publishers; 2012
[15] Organization WH. Xerophthalmia and Night Blindness for the Assessment of Clinical Vitamin a Deficiency in Individuals and Populations. Geneva: World Health Organization; 2014. Available from: http://apps.who.int/ iris/bitstream/10665/133705/1/WHO_ NMH_NHD_EPG_14.4_eng.pdf?ua=1 [Diakses: 29-10-2018]