1. Trisomy 13 has been well recognised since the first modern description by Patau;et al; This boy shows many of the clinical features of the syndrome and several are associated with a poor prognosis,1960
2. In the review by Magenis;et al,1968
3. Clinical experience with trisomies 18 and 13;Hodes, M.E.; Cole, J.; Palmer, C.G.; Reed, T.;Journal of Medical Genetics,1978
4. Trisomy 13 (D) syndrome: studies on parental age, sex ratio and survival;Magenis, R.E.; Hecht, F.; Milham, Jr, S.;Journal of Pediatrics,1968
5. Trisomy 13 in a that those with chromosomal mosaicism, or with a Robertsonian translocation, tended to survive longer than those with primary trisomy;Mankinen, C.B.; Sears, J.W.;However, Hodes et al; did not find any difference in female of over 5 years of age,1976