Rampey, A. H., Irwin, K. L., Oberle, M. W., Kinchen, S., Lee, N. C., Marsden, A., & Rosero Bixby, L. (1993). The effect of using different reference dates for control exposure measurement on relative risk estimates in a case-control study.

Rampey, Alvin H., Kathleen L. Irwin, Mark W. Oberle, Steven Kinchen, Nancy C. Lee, Anne Marsden, و Luis Rosero Bixby. The Effect of Using Different Reference Dates for Control Exposure Measurement On Relative Risk Estimates in a Case-control Study. 1993.

Rampey, Alvin H., et al. The Effect of Using Different Reference Dates for Control Exposure Measurement On Relative Risk Estimates in a Case-control Study. 1993.