单项选择题
A.<5% B.5%~10% C.10%~12% D.12%~15% E.>15%
A.发热 B.呕吐 C.腹痛 D.血便 E.腹块
A.胃扭转 B.幽门痉挛 C.胃食管反流 D.先天性巨结肠 E.先天性肥厚性幽门狭窄