Authors: J K Heath; S J White; C N Johnstone; B Catimel; R J Simpson; R L Moritz; G F Tu; H Ji; R H Whitehead; L C Groenen; A M Scott; G Ritter; L Cohen; S Welt; L J Old; E C Nice; A W Burgess Journal: Proc Natl Acad Sci U S A Date: 1997-01-21 Impact factor: 11.205