33. 關於gastroschisis及omphalocele之比較，何者正確？
(1) gastroschisis形成的原因是因為occlusion of the omphalomesenteric artery
(2) gastroschisis形成的原因是因為failure of gut migration from the yolk sac into the abdomen
(3) gastroschisis發生率約1 in 6000 births
(4) Incidence of associated anomalies，omphalocele約10%-15%
(5) gastroschisis容易合併Beckwith-Wiedemann syndrome
(A) 1
(B) 2, 4
(C) 3, 5
(D) 3
(E) 5
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