Authors: M M Levine; H L DuPont; S B Formal; R B Hornick; A Takeuchi; E J Gangarosa; M J Snyder; J P Libonati Journal: J Infect Dis Date: 1973-03 Impact factor: 5.226
Authors: L W Riley; R S Remis; S D Helgerson; H B McGee; J G Wells; B R Davis; R J Hebert; E S Olcott; L M Johnson; N T Hargrett; P A Blake; M L Cohen Journal: N Engl J Med Date: 1983-03-24 Impact factor: 91.245