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I-HeartChoir: Isifundo esinomdla esibonisa ukuba ukucula kwekwayala kuphucula amandla emisipha yokuphefumla kunye nomgangatho wobomi kwizigulana ezinesifo sentliziyo. Ipapashwe yiSwitzerland Medical Weekly kwiYunivesithi yaseBasel eSwitzerland.
Unyango lwezifo zentliziyo yesifo sokuzalwa esinezinto ezibonakalayo ezibonakalayo zoqhaqho lwentliziyo lwe-50. Isibonelelo esikhulu sabazali kunye nezigulana.