Prospective evaluation of upper and lower gastrointestinal endoscopies and biopsies in the diagnosis and management of allogeneic hematopoietic stell cell transplant recipients with persistent diarrhea - Bocanegra, A B; Mateos, J M; Alarcon, A; De Miguel, C; Guiomar, B; Martinez-Munoz, M E; Gonznalez-Lois, C; Sanchez-Yuste, M R; Sanchez-Romero, I; Vera-Mendoza, I; Calvo, M; Portero, M F; et al. (Bone Marrow Transplantation, 2022)