REFERENCES
- Clayton , D. and Hills , M. 1993 . Statistical Models in Epidemiology , Oxford , , U.K. : Oxford University Press .
- Selvin , S. 1995 . Practical Biostatistical Methods , Belmont , CA : Duxbury Press .
- Ziegel , E. 1995a . Editor's Report on Statistical Models in Epidemiology . Technometrics , 37 : 240 by D. Clayton and M. Hills
- Ziegel , E. 1995b . Editor's Report on Practical Biostatistical Methods . Technometrics , 37 : 241 by S. Selvin