1. Survival and the sex ratio in trisomy 17-18;Weber;Am J Hum Genet,1967
2. Changing demography of trisomy 18;Young;Arch Dis Child,1986
3. Survival in trisomy 18;Carter;Clin Genet,1985
4. Rates and survival of individuals with trisomy 13 and 18;Goldstein;Clin Genet,1988
5. Trisomy 18 in a 13 year old girl;Mehta;J Med Genet,1986