Authors: K L Pyzdrowski; D M Kendall; J B Halter; R E Nakhleh; D E Sutherland; R P Robertson Journal: N Engl J Med Date: 1992-07-23 Impact factor: 91.245
Authors: S J Sullivan; T Maki; K M Borland; M D Mahoney; B A Solomon; T E Muller; A P Monaco; W L Chick Journal: Science Date: 1991-05-03 Impact factor: 47.728