Authors: Daniel E Singer; Robert A Hughes; Daryl R Gress; Mary A Sheehan; Lynn B Oertel; Sue Ward Maraventano; Dyan Ryan Blewett; Bernard Rosner; J Philip Kistler Journal: N Engl J Med Date: 1990-11-29 Impact factor: 91.245
Authors: M D Ezekowitz; S L Bridgers; K E James; N H Carliner; C L Colling; C C Gornick; H Krause-Steinrauf; J F Kurtzke; S M Nazarian; M J Radford Journal: N Engl J Med Date: 1992-11-12 Impact factor: 91.245