PT - JOURNAL ARTICLE AU - J Merlo TI - Multilevel analytical approaches in social epidemiology: measures of health variation compared with traditional measures of association AID - 10.1136/jech.57.8.550 DP - 2003 Aug 01 TA - Journal of Epidemiology and Community Health PG - 550--552 VI - 57 IP - 8 4099 - http://jech.bmj.com/content/57/8/550.short 4100 - http://jech.bmj.com/content/57/8/550.full SO - J Epidemiol Community Health2003 Aug 01; 57