1. Congenital malformation surveillance, two american systems;Edmonds;Int J Epidemiol,1981
2. 1982 Annual Report;International Clearinghouse for Birth Defects Monitoring Systems,1984
3. Monitoring for congenital malformations;Holtzman;Ann Rev Public Health,1986
4. Detection of low intensity epidemicity: application to cleft lip and palate;Knox;Br J Prev Soc Med,1963
5. The detection of disease clustering using generalized regression approach;Mantel;Cancer Res,1967