Authors: H G ten Dam; C Fillastre; G Conge; E Orssaud; C Gateff; A Tanaka; O O Ramirez; J Wright; R Collas; L Chambon; M Barme; U B Tommasi; H Sarrat; P Bres; L Diallo; M Gauthier; M Piot; J Guld Journal: Bull World Health Organ Date: 1970 Impact factor: 9.408