Authors: W O Spitzer; D L Sackett; J C Sibley; R S Roberts; M Gent; D J Kergin; B C Hackett; A Olynich Journal: N Engl J Med Date: 1974-01-31 Impact factor: 91.245
Authors: C G Sheps; E H Wagner; W H Schonfeld; G H DeFriese; M Bachar; E F Brooks; D B Gillings; P A Guild; T R Konrad; C P McLaughlin; T C Ricketts; C Seipp; J S Stein Journal: Am J Public Health Date: 1983-01 Impact factor: 9.308