题目内容
维生素D缺乏性佝偻病的骨骼改变正确的是
2021-10-20
A.生后1岁出现方颅
B.1岁半时前囟闭合
C.下肢畸形见于1岁以前
D.颅骨软化见于6个月以上小儿
E.出牙延迟及牙釉质发育差
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