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Janssen I, Katzmarzyk PT, Ross R.Janssen I, et al. Among authors: katzmarzyk pt.Arch Intern Med. 2002 Oct 14;162(18):2074-9. doi: 10.1001/archinte.162.18.2074.Arch Intern Med. 2002.PMID: 12374515
Janssen I, Katzmarzyk PT, Ross R.Janssen I, et al. Among authors: katzmarzyk pt.Ann Epidemiol. 2004 Sep;14(8):585-91. doi: 10.1016/j.annepidem.2004.01.007.Ann Epidemiol. 2004.PMID: 15350959