TY  - RPRT
TI  - Comparing change in longitudinal studies: adjusting for initial value.
AU  - W M Vollmer
PY  - 1988
DO  - 10.1016/0895-4356(88)90117-5
UR  - https://pubmed.ncbi.nlm.nih.gov/3397761/
ID  - 3397761
ER  -