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Letters to the Editors

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  1. Hook EB, Cross PK (1982) Paternal age and Down's syndrome genotypes diagnosed prenatally: no association in New York State data. Hum Genet 62:167–174

  2. Hook EB, Chambers GC (1977) Estimated rates of Down's syndrome in livebirths by one year maternal age intervals for mothers aged 20 to 49 in a New York study: Implications of the “risk” figures for genetic counseling and cost-benefit analysis of prenatal diagnosis programs. In: Bergsma D, Lowry RB, Trimble BK, Feingold M (eds) Numerical taxonomy of birth defects and polygenic disorders. Birth Defects 13:123–141

  3. Stene J, Stene E, Stengel-Rutkowski S, Murken J-D (1981) Paternal age and Down's syndrome. Data from prenatal diagnosis (DFG). Hum Genet 59:119–124

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Hook, E.B., Cross, P.K. Letters to the Editors. Hum Genet 63, 302 (1983).

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