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Krauss RM, Williams PT.Krauss RM, et al. Among authors: williams pt.Circulation. 2011 Nov 22;124(21):2283-4. doi: 10.1161/CIRCULATIONAHA.111.067223.Circulation. 2011.PMID: 22105194No abstract available.
Farquhar JW, Fortmann SP, Flora JA, Taylor CB, Haskell WL, Williams PT, Maccoby N, Wood PD.Farquhar JW, et al. Among authors: williams pt.JAMA. 1990 Jul 18;264(3):359-65.JAMA. 1990.PMID: 2362332