Authors: C D Berkowitz; J I Ward; K Meier; J O Hendley; P A Brunell; R A Barkin; J M Zahradnik; J Samuelson; L Gordon Journal: J Pediatr Date: 1987-04 Impact factor: 4.406
Authors: J Eskola; H Peltola; A K Takala; H Käyhty; M Hakulinen; V Karanko; E Kela; P Rekola; P R Rönnberg; J S Samuelson Journal: N Engl J Med Date: 1987-09-17 Impact factor: 91.245