Authors: C L Daley; P M Small; G F Schecter; G K Schoolnik; R A McAdam; W R Jacobs; P C Hopewell Journal: N Engl J Med Date: 1992-01-23 Impact factor: 91.245
Authors: S M Holland; E M Eisenstein; D B Kuhns; M L Turner; T A Fleisher; W Strober; J I Gallin Journal: N Engl J Med Date: 1994-05-12 Impact factor: 91.245