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Puri A, Pradhan A, Chaudhary G, Singh V, Sethi R, Narain VS.Puri A, et al. Among authors: singh v.Indian Heart J. 2012 Sep-Oct;64(5):515-7. doi: 10.1016/j.ihj.2012.07.010. Epub 2012 Jul 27.Indian Heart J. 2012.PMID: 23102393Free PMC article.