RT Journal Article SR Electronic T1 Social epidemiology, intra-neighbourhood correlation, and generalised estimating equations JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 914 OP 914 DO 10.1136/jech.57.11.914 VO 57 IS 11 A1 Petronis, K R A1 Anthony, J C YR 2003 UL http://jech.bmj.com/content/57/11/914.1.abstract AB