TY  - RPRT
TI  - Multilevel models for longitudinal variables prognostic for survival.
AU  - B L De Stavola
AU  - E Christensen
PY  - 1996
DO  - 10.1007/bf00127306
UR  - https://pubmed.ncbi.nlm.nih.gov/9384629/
ID  - 9384629
ER  -