RT Journal Article
SR Electronic
T1 Correction
JF British Medical Journal
JO BMJ
FD British Medical Journal Publishing Group
SP 1448
OP 1448
DO 10.1136/bmj.2.5264.1448
VO 2
IS 5264
YR 1961
UL http://www.bmj.com/content/2/5264/1448.abstract
AB