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McCaffery JM, Franz CE, Jacobson K, Leahey TM, Xian H, Wing RR, Lyons MJ, Kremen WS. Effects of social contact and zygosity on 21-y weight change in male twins. The American Journal of Clinical Nutrition. 2011 Aug;94(2):404–9. doi: 10.3945/ajcn.111.012195. |