Choanal Atresias

《英文msh词典》Choanal Atresias
[入口词] Choanal Atresias
[主题词] Choanal Atresia
[英文释义] Congenital bony or membranous occlusion of one or both choanae,due to failure of the embryonic bucconasal membrane to rupture.

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