TY  - RPRT
TI  - A method for analyzing longitudinal outcomes with many zeros.
AU  - Haiyi Xie
AU  - Gregory McHugo
AU  - Anjana Sengupta
AU  - Robin Clark
AU  - Robert Drake
PY  - 2004
DO  - 10.1023/b:mhsr.0000044749.39484.1b
UR  - https://pubmed.ncbi.nlm.nih.gov/15588034/
ID  - 15588034
ER  -