Are different motivations and social capital score associated with return behaviour among Brazilian voluntary non-remunerated blood donors? - Estrada, Fernanda Gomes Mariano Duque; Oliveira, Claudia Di Lorenzo; Sabino, Ester Cerdeira; Custer, Brian; Gonçalez, Thelma Therezinha; Murphy, Edward L; Teles, Dahra; Mendrone Júnior, Alfredo; Witkin, Steven Sol; Almeida Neto, César de (Transfusion medicine, 2020)