Authors: J Linnen; J Wages; Z Y Zhang-Keck; K E Fry; K Z Krawczynski; H Alter; E Koonin; M Gallagher; M Alter; S Hadziyannis; P Karayiannis; K Fung; Y Nakatsuji; J W Shih; L Young; M Piatak; C Hoover; J Fernandez; S Chen; J C Zou; T Morris; K C Hyams; S Ismay; J D Lifson; G Hess; S K Foung; H Thomas; D Bradley; H Margolis; J P Kim Journal: Science Date: 1996-01-26 Impact factor: 47.728