death_date birth_place name birth_date article_title birth_name occupation
april 15 , 2006 october 04 , 1924 krushovitsa , bulgaria ivan mitev october 04 , 1924 ivan mitev
 ivan ivanov mitev pediatrician , cardiologist
ivan mitev

professor ivan mitev ivanov -lrb- 1924 - 2007 -rrb- was a bulgarian pediatrician and cardio rheumatologist who discovered the sixth heart tone , called the tone of mitev .
