RT Journal Article
SR Electronic
T1 Alder Hey
JF Journal of Epidemiology and Community Health
JO J Epidemiol Community Health
FD BMJ Publishing Group Ltd
SP 4
OP 5
DO 10.1136/jech.56.1.4
VO 56
IS 1
A1 Lawrence, C
YR 2002
UL http://jech.bmj.com/content/56/1/4.abstract
AB