Fear of blood, injections and vasovagal reactions in the context of blood donation in Brazil - Zucoloto, Miriane Lucindo; Gonçalez, Thelma; Menezes, Neia Prata; Custer, Brian; McFarland, Willi; Martinez, Edson Zangiacomi (International Congress of the International Society of Blood Transfusion (ISBT), 2018)