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Chang E, Fung LC, Li CS, Lin TC, Tam L, Tang C, Tong EK.Chang E, et al.Health Promot Pract. 2013 Sep;14(5 Suppl):80S-7S. doi: 10.1177/1524839913485756. Epub 2013 May 10.Health Promot Pract. 2013.PMID: 23667059Free PMC article.