RT Journal Article
SR Electronic
T1 Randomised controlled trials.
JF Journal of Epidemiology and Community Health
JO J Epidemiol Community Health
FD BMJ Publishing Group Ltd
SP 423
OP 424
DO 10.1136/jech.48.4.423-a
VO 48
IS 4
A1 M Newman
YR 1994
UL http://jech.bmj.com/content/48/4/423.2.abstract
AB