RT Journal Article
SR Electronic
T1 Correction
JF Journal of Epidemiology and Community Health
JO J Epidemiol Community Health
FD BMJ Publishing Group Ltd
SP 348
OP 348
DO 10.1136/jech.41.4.348
VO 41
IS 4
YR 1987
UL http://jech.bmj.com/content/41/4/348.abstract
AB