@article{Merlo2006,
author = {Merlo, J. and Chaix, B. and Ohlsson, H. and Beckman, A. and Johnell, K. and Hjerpe, P. and Rastam, L. and K., Larsen},
title= {A brief conceptual tutorial of multilevel analysis in social epidemiology: Using measures of clustering in multilevel logistic regression to investigate contextual phenomena},
year = {2006},
doi = {10.1136/jech.2004.029454},
journal = {Journal of Epidemiology and Community Health},
volume = {60},
number = {4},
pages = {290--297},
}