1. Gowshall M, Taylor-Robinson SD. The increasing prevalence of non-communicable diseases in low-middle income countries: The view from Malawi. International journal of general medicine. 2018;11:255. [DOI:10.2147/IJGM.S157987]

2. Shahidi N, editor The importance of nutritional labeling. Proceeding of the 4th Congress of Nutrition 1997 Tehran University of Medical Sciences , [Persian]

3. Fund WCR, Research AIfC. Food, nutrition, physical activity, and the prevention of cancer: a global perspective: Amer Inst for Cancer Research; 2007.

4. Campos S, Doxey J, Hammond D. Nutrition labels on pre-packaged foods: a systematic review. Public health nutrition. 2011;14(8):1496-506. [DOI:10.1017/S1368980010003290]

5. Organization WH. Global status report on noncommunicable diseases 2014: World Health Organization; 2014.

6. Peykari N, Hashemi H, Dinarvand R, Haji-Aghajani M, Malekzadeh R, Sadrolsadat A, et al. National action plan for non-communicable diseases prevention and control in Iran; a response to emerging epidemic. Journal of diabetes and metabolic disorders. 2017;16:3. [DOI:10.1186/s40200-017-0288-4]

7. Shine A, O'Reilly S, O'Sullivan K. Consumer use of nutrition labels. British Food Journal. 1997;99(8):290-6. [DOI:10.1108/00070709710188390]

8. Jackey BA, Cotugna N, Orsega-Smith E. Food Label Knowledge, Usage and Attitudes of Older Adults. Journal of nutrition in gerontology and geriatrics. 2017;36(1):31-47. [DOI:10.1080/21551197.2017.1280868]

9. Viola GC, Bianchi F, Croce E, Ceretti E. Are Food Labels Effective as a Means of Health Prevention? Journal of public health research. 2016;5(3):768. [DOI:10.4081/jphr.2016.768]

10. Haghighian Roudsari A, Zargaran A, Milani Bonab A, Abdollah S. Consumers' perception of nutritional traffic light in food products: a qualitative study on new nutritional policy in Iran. Nutrition and Food Science Research 2018(special issue (5)):69.

11. Mirghotbi M, Bajan M, Amiri Z. Consumer awareness and practice on food labels [in Persian]. Payesh. 2012 4(11):505-10.

12. Cowburn G, Stockley L. Consumer understanding and use of nutrition labelling: a systematic review. Public health nutrition. 2005;8(01):21-8. [DOI:10.1079/PHN2004666]

13. Prieto-Castillo L, Royo-Bordonada MA, Moya-Geromini A. Information search behaviour, understanding and use of nutrition labeling by residents of Madrid, Spain. Public health. 2015;129(3):226-36. [DOI:10.1016/j.puhe.2014.12.003]

14. Talagala IA, Arambepola C. Use of food labels by adolescents to make healthier choices on snacks: a cross-sectional study from Sri Lanka. BMC public health. 2016;16:739. [DOI:10.1186/s12889-016-3422-1]

15. Lynn MR. Determination and quantification of content validity. Nursing research. 1986;35(6):382-5. [DOI:10.1097/00006199-198611000-00017]

16. Polit DF, Beck CT. The content validity index: are you sure you know what's being reported? Critique and recommendations. Research in nursing & health. 2006;29(5):489-97. [DOI:10.1002/nur.20147]

17. Kanter R, Vanderlee L, Vandevijvere S. Front-of-package nutrition labelling policy: global progress and future directions. Public Health Nutrition. 2018;21(8):1399-408. [DOI:10.1017/S1368980018000010]

18. Graham DJ, Jeffery RWJJotADA. Location, location, location: eye-tracking evidence that consumers preferentially view prominently positioned nutrition information. 2011;111(11):1704-11. [DOI:10.1016/j.jada.2011.08.005]

19. Grunert KG, Wills JMJJoph. A review of European research on consumer response to nutrition information on food labels. 2007;15(5):385-99. [DOI:10.1007/s10389-007-0101-9]

20. Freire WB, Waters WF, Rivas-Marino G, Nguyen T, Rivas P. A qualitative study of consumer perceptions and use of traffic light food labelling in Ecuador. Public health nutrition. 2017;20(5):805-13. [DOI:10.1017/S1368980016002457]

21. Sassi F, Cecchini M, Lauer J, Chisholm D. Improving lifestyles, tackling obesity: the health and economic impact of prevention strategies. OECD Health Working Papers; 2009.

22. Crockett RA, King SE, Marteau TM, Prevost AT, Bignardi G, Roberts NW, et al. Nutritional labelling for healthier food or non-alcoholic drink purchasing and consumption. The Cochrane database of systematic reviews. 2018;2:Cd009315. [DOI:10.1002/14651858.CD009315.pub2]

23. Malek Mahdavi A, Abdolahi P, Reza M. Knowledge, Attitude and Practice between Medical and Non-Medical Sciences Students about Food Labeling. Health Promot Perspect. 2012;2(2):173-9.

24. Ghanbari Ghozikali M, Ghochani M, Amini Tabok F, Nowrouz P, Dehghanzadeh Reihani R, H. A. Assessing knowledge and practice of food producers, retailers and consumers of food labels in Bostanabad [in Persian]. Journal of Food Hygiene. 2014;4.

25. Schupp A, Gillespie J, Reed D. Consumer awareness and use of nutrition labels on packaged fresh meats: a pilot study. Journal of Food Distribution Research. 1998;29:24-30.

26. Becker MW, Bello NM, Sundar RP, Peltier C, Bix L. Front of Pack Labels Enhance Attention to Nutrition Information in Novel & Commercial Brands. Food policy. 2015;56:76-86. [DOI:10.1016/j.foodpol.2015.08.001]

27. Ducrot P, Méjean C, Julia C, Kesse-Guyot E, Touvier M, Fezeu LK, et al. Objective Understanding of Front-of-Package Nutrition Labels among Nutritionally At-Risk Individuals. Nutrients. 2015;7(8):7106-25. [DOI:10.3390/nu7085325]

28. Balcombe K, Fraser I, Di Falco S. Traffic lights and food choice: A choice experiment examining the relationship between nutritional food labels and price. Food policy. 2010;35(3):211-20. [DOI:10.1016/j.foodpol.2009.12.005]

29. Julia C, Kesse-Guyot E, Ducrot P, Péneau S, Touvier M, Méjean C, et al. Performance of a five category front-of-pack labelling system - the 5-colour nutrition label - to differentiate nutritional quality of breakfast cereals in France. BMC public health. 2015;15:179. [DOI:10.1186/s12889-015-1522-y]

30. Siegrist M, Leins-Hess R, Keller C. Which front-of-pack nutrition label is the most efficient one? The results of an eye-tracker study. Food Quality Preference. 2015;39:183-90. [DOI:10.1016/j.foodqual.2014.07.010]

31. Reyes M, Garmendia ML, Olivares S, Aqueveque C, Zacarías I, Corvalán C. Development of the Chilean front-of-package food warning label. BMC public health. 2019;19(1):906. [DOI:10.1186/s12889-019-7118-1]

32. Esfandiari Z, Marasi MR, Estaki F, Sanati V, Panahi E, Akbari N, et al. Influence of education on knowledge, attitude and practices of students of Isfahan University of Medical Sciences to traffic light inserted on food labeling. 2019;77(1):54-62.

33. Levy AS, Fein SBJJoNE. Consumers' ability to perform tasks using nutrition labels. 1998;30(4):210-7. [DOI:10.1016/S0022-3182(98)70321-8]

34. Marietta AB, Welshimer KJ, Anderson SLJJotADA. Knowledge, attitudes, and behaviors of college students regarding the 1990 Nutrition Labeling Education Act food labels. 1999;99(4):445-9. [DOI:10.1016/S0002-8223(99)00108-X]

35. Kim SY, Nayga Jr RM, Capps Jr O. Food label use, self‐selectivity, and diet quality. Journal of Consumer Affairs. 2001;35(2):346-63. [DOI:10.1111/j.1745-6606.2001.tb00118.x]

36. Kim S, Nayga R, Capps O. Health knowledge and consumer use of nutritional labels: The issue revisited. Agricultural resource Economics review. 2016;30:10-9. [DOI:10.1017/S1068280500000502]

37. Misra R. Knowledge, attitudes, and label use among college students. Journal of the American Dietetic Association. 2007;107(12):2130-4. [DOI:10.1016/j.jada.2007.09.001]

38. Guthrie JF, Fox JJ, Cleveland LE, Welsh S. Who uses nutrition labeling, and what effects does label use have on diet quality? Journal of Nutrition education. 1995;27(4):163-72. [DOI:10.1016/S0022-3182(12)80422-5]

39. Nayga J, Rodolfo M. Toward an understanding of consumers' perceptions of food labels. The International Food Agribusiness Management Review. 1999;2(1):29-45. [DOI:10.1016/S1096-7508(99)00011-7]

40. Miller LM, Applegate E, Beckett LA, Wilson MD, Gibson TN. Age differences in the use of serving size information on food labels: numeracy or attention? Public health nutrition. 2016:1-11. [DOI:10.1017/S1368980016003219]