TY  - RPRT
TI  - Estimating sample size for continuous outcomes, comparing more than two parallel groups with unequal sizes.
AU  - J Singer
PY  - 1997
DO  - 10.1002/(sici)1097-0258(19971230)16:24<2805::aid-sim676>3.0.co;2-b
UR  - https://pubmed.ncbi.nlm.nih.gov/9483715/
ID  - 9483715
ER  -