TY  - RPRT
TI  - Prognostic assessment from studies with non-randomized treatment assignment.
AU  - L A Kiemeney
AU  - A L Verbeek
AU  - J C van Houwelingen
PY  - 1994
DO  - 10.1016/0895-4356(94)90005-1
UR  - https://pubmed.ncbi.nlm.nih.gov/8138834/
ID  - 8138834
ER  -