RT Journal Article
SR Electronic
T1 This Week's Letters
JF Science
JO Science
FD American Association for the Advancement of Science
SP 1503
OP 1503
DO 10.1126/science.300.5625.1503a
VO 300
IS 5625
YR 2003
UL http://science.sciencemag.org/content/300/5625/1503.1.abstract
AB