TY  - RPRT
TI  - A multivariate model for ordinal trait analysis.
AU  - S Xu
AU  - C Xu
PY  - 2006
DO  - 10.1038/sj.hdy.6800885
UR  - https://pubmed.ncbi.nlm.nih.gov/16912701/
ID  - 16912701
ER  -