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Daniel E Forman et al. J Am Coll Cardiol. 2013.

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. 2013 May 21;61(20):2113.

doi: 10.1016/j.jacc.2013.02.028. Epub 2013 Mar 21.

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6-min walk test provides prognostic utility comparable to cardiopulmonary exercise testing in ambulatory outpatients with systolic heart failure.
Forman DE, Fleg JL, Kitzman DW, Brawner CA, Swank AM, McKelvie RS, Clare RM, Ellis SJ, Dunlap ME, Bittner V. Forman DE, et al. J Am Coll Cardiol. 2012 Dec 25;60(25):2653-61. doi: 10.1016/j.jacc.2012.08.1010. Epub 2012 Nov 21. J Am Coll Cardiol. 2012. PMID: 23177293 Free PMC article. Clinical Trial.
Predictive value of 6-min walk test distance versus cardiopulmonary exercise testing in systolic heart failure: same value for different approaches?
Guazzi M, Bandera F. Guazzi M, et al. J Am Coll Cardiol. 2013 May 21;61(20):2112. doi: 10.1016/j.jacc.2012.12.053. Epub 2013 Mar 21. J Am Coll Cardiol. 2013. PMID: 23524047 No abstract available.