_:vb50936250 "A nutritional deficiency that is disease characterized by a cardiomyopathy secondary to selenium deficiency."^^ . _:vb50936250 . _:vb50936250 . _:vb50936250 . _:vb50936250 "url:https://en.wikipedia.org/wiki/Keshan_disease"^^ . _:vb50936250 . _:vb50936250 .