Authors: L L Leape; T A Brennan; N Laird; A G Lawthers; A R Localio; B A Barnes; L Hebert; J P Newhouse; P C Weiler; H Hiatt Journal: N Engl J Med Date: 1991-02-07 Impact factor: 91.245
Authors: Christopher P Landrigan; Gareth J Parry; Catherine B Bones; Andrew D Hackbarth; Donald A Goldmann; Paul J Sharek Journal: N Engl J Med Date: 2010-11-25 Impact factor: 91.245