TY  - RPRT
TI  - Design and analysis methods for longitudinal research.
AU  - N R Cook
AU  - J H Ware
PY  - 1983
DO  - 10.1146/annurev.pu.04.050183.000245
UR  - https://pubmed.ncbi.nlm.nih.gov/6860434/
ID  - 6860434
ER  -