RT Journal Article
SR Electronic
T1 Society for Social Medicine
JF Journal of Epidemiology and Community Health
JO J Epidemiol Community Health
FD BMJ Publishing Group Ltd
SP 399
OP 402
DO 10.1136/jech.43.4.399
VO 43
IS 4
YR 1989
UL http://jech.bmj.com/content/43/4/399.abstract
AB