TY  - RPRT
TI  - Explained randomness in proportional hazards models.
AU  - John O'Quigley
AU  - Ronghui Xu
AU  - Janez Stare
PY  - 2005
DO  - 10.1002/sim.1946
UR  - https://pubmed.ncbi.nlm.nih.gov/15532086/
ID  - 15532086
ER  -