An opening snap is frequently heard along the left sternal border in the fourth intercostal space.
開放音は第四肋間腔胸骨左縁に沿って聴取されることが多い。
An opening snap is frequently heard along the left sternal border in the fourth intercostal space.
開放音は第四肋間腔胸骨左縁に沿って聴取されることが多い。