TY  - RPRT
TI  - Statistical validation of intermediate endpoints for chronic diseases.
AU  - L S Freedman
AU  - B I Graubard
AU  - A Schatzkin
PY  - 1992
DO  - 10.1002/sim.4780110204
UR  - https://pubmed.ncbi.nlm.nih.gov/1579756/
ID  - 1579756
ER  -