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Authors: M H Wahdan; J E Sippel; I A Mikhail; A E Rahka; E S Anderson; H A Sparks; B Cvjetanović Journal: Bull World Health Organ Date: 1975 Impact factor: 9.408
Authors: M M Levine; H L DuPont; R B Hornick; M J Snyder; W Woodward; R H Gilman; J P Libonati Journal: J Infect Dis Date: 1976-04 Impact factor: 5.226