@inbook{1209176609, author={David L. DeMets and Bruce M. Psaty and Thomas R. Fleming}, editor={Livingston, Edward H. and Lewis, Roger J.}, title={When Can Intermediate Outcomes Be Used as Surrogate Outcomes?}, booktitle={JAMA Guide to Statistics and Methods}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2019}, url={jamaevidence.mhmedical.com/content.aspx?aid=1209176609} }