RT Journal Article
SR Electronic
T1 This Week's Letters
JF Science
JO Science
FD American Association for the Advancement of Science
SP 1045
OP 1045
DO 10.1126/science.301.5636.1045a
VO 301
IS 5636
YR 2003
UL http://science.sciencemag.org/content/301/5636/1045.1.abstract
AB