TY  - RPRT
TI  - A model for the interim analysis process: a case study.
AU  - Leticia Delgado-Herrera
AU  - Dan Anbar
PY  - 2003
DO  - 10.1016/s0197-2456(02)00275-1
UR  - https://pubmed.ncbi.nlm.nih.gov/12559642/
ID  - 12559642
ER  -