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Gregory CO, Martorell R, Narayan KM, Ramirez-Zea M, Stein AD.Gregory CO, et al. Among authors: martorell r.Public Health Nutr. 2009 Feb;12(2):228-35. doi: 10.1017/S1368980008003443. Epub 2008 Aug 15.Public Health Nutr. 2009.PMID: 18702839Free PMC article.