Walter S. Graf
... that cardiologist Walter S. Graf was a pioneer in establishing the modern system of paramedic emergency care?
... that cardiologist <b id="mwBOc"><a href="./Walter_S._Graf" id="mwBOg" rel="mw:WikiLink" title="Walter S. Graf">Walter S. Graf</a></b> was a pioneer in establishing the modern system of <a href="./Paramedic" id="mwBOk" rel="mw:WikiLink" title="Paramedic">paramedic</a> emergency care?