Covas, D T Gene frequencies of the HPA-1 and HPA-2 platelet antigen alleles among the Amerindians. [electronic resource] - Vox sanguinis 1997 - 182-4 p. digital Publication Type: Clinical Trial; Controlled Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't ISSN: 0042-9007 Standard No.: 10.1046/j.1423-0410.1997.7330182.x doi Subjects--Topical Terms: AllelesAntigens, Human Platelet--geneticsBlack People--geneticsBrazilGene FrequencyHumansIndians, South American--geneticsWhite People--genetics