Prevalence of iron deficiency and its influence on six-minute walk test distance in patients eligible for transcatheter aortic valve implantation. A prospective study gan Michał Błaszkiewicz, Krzysztof A. Aleksandrowicz, Małgorzata Mazur, Tomasz G. Witkowski, Michał Kosowski, Piotr Kübler, Krzysztof Reczuch, Marcin Protasiewicz

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