Re: "The validity of estimating the incidence of diabetic retinopathy from prevalence".

@article{Podgor1990ReV,
  title={Re: "The validity of estimating the incidence of diabetic retinopathy from prevalence".},
  author={Marvin J. Podgor and Maria Cristina Leske},
  journal={American journal of epidemiology},
  year={1990},
  volume={131 4},
  pages={743-4}
}