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Lepeak L, Tevaarwerk A, Jones N, Williamson A, Cetnar J, LoConte N.Lepeak L, et al. Among authors: williamson a.WMJ. 2011 Feb;110(1):21-5.WMJ. 2011.PMID: 21473509Free PMC article.
Martin RL, Tully M, Kos A, Frazer D, Williamson A, Conlon A, Enser JJ, LoConte NK.Martin RL, et al. Among authors: williamson a.Health Promot Pract. 2017 Sep;18(5):741-750. doi: 10.1177/1524839917705127.Health Promot Pract. 2017.PMID: 28812930