TY  - RPRT
TI  - Designing follow-up intervals.
AU  - G M Raab
AU  - J A Davies
AU  - A B Salter
PY  - 2004
DO  - 10.1002/sim.1882
UR  - https://pubmed.ncbi.nlm.nih.gov/15449335/
ID  - 15449335
ER  -