本文收集本地区２１８例先天畸形儿，占同期出生新生儿的１２．６９‰，神经系统畸形明显占首位９发生率为８．３３‰、构成比为４６．２８‰）。同时发现，先天畸形与季节、产妇......

The cleft palate is a defect of longitudinal fusion that affects the bone and the mucosa in the midline of the hard pala......