TY  - RPRT
TI  - Sample size calculation for multicenter randomized trial: taking the center effect into account.
AU  - Emilie Vierron
AU  - Bruno Giraudeau
PY  - 2006
DO  - 10.1016/j.cct.2006.11.003
UR  - https://pubmed.ncbi.nlm.nih.gov/17188941/
ID  - 17188941
ER  -