RT Journal Article SR Electronic T1 Social epidemiology—strategies for public health activism JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 86 OP 86 DO 10.1136/jech.2007.064832 VO 62 IS 1 A1 Frank J van Lenthe YR 2008 UL http://jech.bmj.com/content/62/1/86.1.abstract AB