URL：https://www.researchgate.net/publication/237098303/figure/fig2/AS:299432873611273@1448401768585/Left-and-right-arches-in-the-trachea-are-equal-in-size-but-the-right-arch-was-5-mm.png
掲載元：https://www.researchgate.net/figure/Left-and-right-arches-in-the-trachea-are-equal-in-size-but-the-right-arch-was-5-mm_fig2_237098303
