Title:
Science
Publisher:
American Association for the Advancement of Science (AAAS)
ISSN
(Print):
00368075
ISSN
(Electronic):
10959203
Publication date
(Print):
October
1997
Volume: 278
Issue: 5338
Pages: 680-686
Article
DOI: 10.1126/science.278.5338.680
SO-VID: 2ad05da0-c495-479b-862c-e567a579271b