Authors: P Echeverria; D N Taylor; J Seriwatana; U Leksomboon; W Chaicumpa; C Tirapat; B Rowe Journal: Bull World Health Organ Date: 1987 Impact factor: 9.408
Authors: E J Hansen; F R Gonzales; N R Chamberlain; M V Norgard; E E Miller; L D Cope; S E Pelzel; B Gaddy; A Clausell Journal: Infect Immun Date: 1988-10 Impact factor: 3.441