Authors: P D Delmas; N H Bjarnason; B H Mitlak; A C Ravoux; A S Shah; W J Huster; M Draper; C Christiansen Journal: N Engl J Med Date: 1997-12-04 Impact factor: 91.245
Authors: D Hosking; C E Chilvers; C Christiansen; P Ravn; R Wasnich; P Ross; M McClung; A Balske; D Thompson; M Daley; A J Yates Journal: N Engl J Med Date: 1998-02-19 Impact factor: 91.245