1. Medical record linkage;Acheson, E.D.,1967
2. Risk of neural tube defects in relation to fertility and fertility drug use;Mills, J.L.; Simpson, J.L.; Rhoads, G.G.; Graubard, B.I.; Hoffman, H.; Conley, M.;Lancet,1990
3. Anencephalus in the Oxford record linkage study area;Fedrick, J.;Devel Med Child Neurol,1976
4. Risk of anencephaly in migrant and nonmigrant women in the Oxford area;Hobbs, M.S.T.;Br Jf Prev Soc Med
5. The value of capture-recapture methods even for apparent exhaustive surveys;Hook, E.B.; Regal, R.R.;Am Jf Epidemiol,1992