Authors: R Ackermann; J Kabatzki; H P Boisten; A C Steere; R L Grodzicki; S Hartung; U Runne Journal: Dtsch Med Wochenschr Date: 1984-01-20 Impact factor: 0.628
Authors: A C Steere; W P Batsford; M Weinberg; J Alexander; H J Berger; S Wolfson; S E Malawista Journal: Ann Intern Med Date: 1980-07 Impact factor: 25.391