1. Patau, K., Smith, D. W., Therman, E., Inhorn, S. L., & Wagner, H. P. (1960). Multiple congenital anomaly caused by extra chromosome. Lancet, 1, 790–793.
2. Carey, J. C. (2005). Trisomy 18 and 13 syndromes. In J. Allanson & S. Cassidy (Eds.), Management of genetic syndromes (2nd ed., pp. 555–568). Hoboken, NJ: Wiley.
3. Jones, K. L. (2006). Trisomy 13 syndrome. In K. L. Jones (Ed.), Smith’s recognized patterns of human malformation (6th ed., pp. 18–21). Philadelphia: Elsevier Saunders.
4. Goldstein, H., & Nielsen, K. G. (1988). Rates and survival of individuals with trisomy 18 and 13. Clinical Genetics, 34, 366–372.
5. Wyllie, J. P., Wright, M. J., Burn, J., & Hunter, S. (1994). Natural history of trisomy 13. Archives of Disease in Childhood, 71, 343–345.