Preoperative Hemoglobin and Actual Need for Blood Transfusion in Brain Tumor Resection Procedures: A Retrospective Cohort Study. Issue 2 (19th April 2022) - Tomás-Biosca, Ana; Martinez-Simon, Antonio; Guridi, Jorge; Tejada Solís, Sonia; Bejarano, Bartolomé; Honorato-Cia, Cristina; Cacho-Asenjo, Elena; Nuñez-Cordoba, Jorge M.