@misc{indiciaef2354d43f53c, title = {Power analyses for correlations from clustered study designs.}, author = {X M Tu and J Kowalski and P Crits-Christoph and R Gallop}, year = {2006}, doi = {10.1002/sim.2273}, url = {https://pubmed.ncbi.nlm.nih.gov/16025545/}, note = {Source identifier: 16025545} }