1. WHO (2007b) AnthroPlus software for Windows. URL: http://www.who.int/growthref/tools/en/
2. WHO (2007a) BMI for Age: 5 to 19 Years (z-scores). URL: http://www.who.int/growthref/who2007_bmi_for_age/en/index.html.
3. WHO (1990) Diet, Nutrition and the Prevention of Chronic Diseases. WHO Technical Report Series, 797. WHO, Geneva.
4. Statistical Package for Social Science (2008) SPSS 17.0 for Windows. SPSS Inc., Chicago, IL, USA.