TY  - RPRT
TI  - A two-stage design for randomized trials with binary outcomes.
AU  - S Wieand
AU  - T Therneau
PY  - 1987
DO  - 10.1016/0197-2456(87)90022-5
UR  - https://pubmed.ncbi.nlm.nih.gov/3568693/
ID  - 3568693
ER  -