Frequencies of genetic variants of the Rh, Kell, Duffy, Kidd, MNS and Diego systems of northwest Rio Grande do Sul, Brazil Scheila da Silva Soares; Josiane Rodrigues Aquino; Francini Petrolli; Tiago Bittencourt de Oliveira; Silvana Almeida; Marilu Fiegenbaum;

Frequency of antigen Dia on the blood donor population of the Hemocenter coordinator of the Hemopa Foundation Adna dos Santos Caldas; Bruno Costa dos Santos; Maurício Koury Palmeira; Fabiana Regina Ribeiro Carvalho; Carlos Eduardo de Melo Amaral;

Investigation of haematological, inflammatory parameters and the incidence of alloimmunization in multi-transfused sickle cell diseased patients Florence Ifechukwude Aboderin; Taofeeq Oduola; Glenda Mary Davison; Oluwafemi Omoniyi Oguntibeju;