TY  - RPRT
TI  - Perspective: validating surrogate markers--are we being naive?
AU  - V De Gruttola
AU  - T Fleming
AU  - D Y Lin
AU  - R Coombs
PY  - 1997
DO  - 10.1093/infdis/175.2.237
UR  - https://pubmed.ncbi.nlm.nih.gov/9203643/
ID  - 9203643
ER  -