^Ben‐Neriah, Z., Withers, S., Thomas, M., Toi, A., Chong, K., Pai, A., Velscher, L., Vero, S., Keating, S., Taylor, G. and Chitayat, D. (2007), OEIS complex: prenatal ultrasound and autopsy findings. Ultrasound Obstet Gynecol, 29: 170-177. https://doi.org/10.1002/uog.3874نسخة محفوظة 2 يونيو 2018 على موقع واي باك مشين.
^"Omphalocele, exstrophy of the cloaca, imperforate anus, and spinal defects complex". Genetic and Rare Diseases Information Center. US Department of Health & Human Services. مؤرشف من الأصل في 2021-01-16. There is a high association with other birth defects, especially spina bifida, which occurs in up to 75% of cases. Omphalocele, a defect of the abdominal wall in the region of the umbilicus, is also common, as are kidney abnormalities.
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