@article{articlee1aa7148,
title   = {Intracluster correlation coefficients for the Brazilian Multicenter Study on Preterm Birth (EMIP): methodological and practical implications},
author = {Lajos, Giuliane J. and Haddad, Samira M. and Tedesco, Ricardo P. and Passini Júnior, Renato and Dias, Tabata Z. and Nomura, Marcelo L. and Rheder, Patrícia M. and Sousa, Maria H. and Cecatti, José G. and Martinez, Francisco Eulogio},
year = {2014},
doi = {10.1186/1471-2288-14-54},
journal   = {BMC Medical Research Methodology}
}