Authors: B J Peterson; W M Wollheim; P J Mulholland; J R Webster; J L Meyer; J L Tank; E Marti; W B Bowden; H M Valett; A E Hershey; W H McDowell; W K Dodds; S K Hamilton; S Gregory; D D Morrall Journal: Science Date: 2001-04-06 Impact factor: 47.728