The multiple presentation of oral actinomycosis in post-hematopoietic stem cell transplantation patients: case series - Ana Carolina dos Santos Menezes; Lísia Daltro Borges Alves; Gabriela de Assis Ramos; Marcelo Ribeiro Schirmer; Maria Claudia Rodrigues Moreira; Maria Midori Miura Piragibe; Andréia Cristina de Melo; Héliton Spíndola Antunes (Hematology, Transfusion and Cell Therapy)