TY  - RPRT
TI  - Median regression for longitudinal data.
AU  - Xuming He
AU  - Bo Fu
AU  - Wing K Fung
PY  - 2003
DO  - 10.1002/sim.1581
UR  - https://pubmed.ncbi.nlm.nih.gov/14652867/
ID  - 14652867
ER  -