RT Journal Article SR Electronic T1 Social network and lifestyle in Danish adults. JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 327 OP 328 DO 10.1136/jech.49.3.327 VO 49 IS 3 A1 M Osler YR 1995 UL http://jech.bmj.com/content/49/3/327.abstract AB