TY  - RPRT
TI  - An example of using mixed models and PROC MIXED for longitudinal data.
AU  - R D Wolfinger
PY  - 1997
DO  - 10.1080/10543409708835203
UR  - https://pubmed.ncbi.nlm.nih.gov/9358325/
ID  - 9358325
ER  -