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2. Perinatal mortality and neonatal survival in Avon: 1976-9;Mutch, L.M.M.; Brown, N.J.; Speidel, B.D.; Dunn, P.M.;BrMedJ,1981
3. Unanswered questions on neural tube defects;Seller, M.J.;BrMedJ,1987
4. The design and interpretation of case-control studies of perinatal mortality;Clarke, M.; Clayton, D.;AmJ Epidemiol,1981
5. Quality of obstetric care provided for Asian immigrants in Leicestershire;Clarke, M.; Clayton, D.;BrMedJ,1983