Aspergillus fungus ball of the bladder after hematopoietic transplantation in a pediatric patient: Successful treatment with intravesical voriconazole and surgery - González-Vicent M; Lassaletta A; López-Pino M; Romero-Tejada J; De La Fuente-Trabado M; Díaz M (Pediatric Transplantation, 2008)