RT Journal Article
SR Electronic
T1 LETTER FROM SINGAPORE
JF Occupational and Environmental Medicine
JO Occup Environ Med
FD BMJ Publishing Group Ltd
SP 142
OP 142
DO 10.1136/oem.60.2.142
VO 60
IS 2
A1 David Koh
YR 2003
UL http://oem.bmj.com/content/60/2/142.abstract
AB