TY  - RPRT
TI  - A statistical design for estimating functional survival.
AU  - H L Bank
AU  - L Buchner
AU  - H Hunt
PY  - 1979
DO  - 10.1016/0011-2240(79)90063-4
UR  - https://pubmed.ncbi.nlm.nih.gov/520012/
ID  - 520012
ER  -