Affiliation: | 1. Institute for Transfusion Medicine, University Hospital Essen, Essen, Germany;2. Laboratory of Immunogenetics and Histocompatibility (LIGH), Genetics Department, Federal University of Paraná, Curitiba, Brazil;3. Capes Foundation, Ministry of Education of Brazil, Brasília, Brazil;4. Reproductive Immunology Center, Porto Alegre, Brazil |