Richard Ryall

Measurement of in vivo mutations in human lymphocytes

Alexander A. Morley, Kevin J. Trainor, R. Seshadri et al. · Nature · 1983 · 229 citations

Primary Immunodeficiency, Medicine, Immunology +6

The impact of maternal serum screening on the birth prevalence of Down's syndrome and the use of amniocentesis and chorionic villus sampling in South Australia

Tracy Cheffins, Annabelle Chan, Eric Haan et al. · BJOG An International Journal of Obstetrics & Gynaecology · 2000 · 118 citations

Neonatal screening for cystic fibrosis using immunoreactive trypsinogen and direct gene analysis: four years' experience

Enzo Ranieri, Barry Lewis, R L Gerace et al. · BMJ · 1994 · 89 citations · Full text

Neonatal screening strategy for cystic fibrosis using immunoreactive trypsinogen and direct gene analysis.

Enzo Ranieri, Richard Ryall, C. Phillip Morris et al. · BMJ · 1991 · 74 citations · Full text

Improved performance in a prenatal screening programme for Down's syndrome incorporating serum‐free hCG subunit analyses

Richard Ryall, Alan Staples, E. F. Robertson et al. · Prenatal Diagnosis · 1992 · 70 citations

Down Syndrome, South Australia, Fertility +15