Conception and design: James. Acquisition of data: James, MacGregor, Aldana. Analysis and interpretation of data: James, Perszyk, MacGregor. Drafting the article: James. Critically revising the article: James. Reviewed submitted version of manuscript: all authors. Approved the final version of the manuscript on behalf of all authors: James.
World Health Organization: WHO Child Growth Standards: Methods and Development. Head Circumference-for-Age Arm Circumference-for-Age Triceps Skinfold-for-Age and Subscapular Skinfold-for-Age GenevaWorld Health Organization2007. (http://www.who.int/childgrowth/standards/second_set/technical_report_2/en/index.html) [Accessed February 25 2014]