Author Affiliations: Institute of Health Sciences, VU University, Amsterdam, the Netherlands (Dr Katan); and Optimal Weight for Life Program, Department of Medicine, Children's Hospital, Boston, Massachusetts (Dr Ludwig).
Katan MB, Ludwig DS. Extra Calories Cause Weight Gain—But How Much? JAMA. 2010;303(1):65–66. doi:10.1001/jama.2009.1912
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