Liberal red blood cell transfusions impair quality of life after cardiac surgery A. González-Pérez, J.Z. Al-Sibai, P. Álvarez-Fernández, P. Martínez-Camblor, M. Argüello-Junquera, J.M. García-Gala, E. Martínez-Revuelta, J. Silva, C. Morís, G.M. Albaiceta

Conservative versus liberal oxygen therapy in relation to all-cause mortality among patients in the intensive care unit: A systematic review of randomized controlled trials with meta-analysis and trial sequential analysis X. Li, D. Liu, C. Liu, Z. Mao, Y. Liu, H. Yi, F. Zhou

Association between storage age of transfused red blood cells and clinical outcomes in critically ill adults: A meta-analysis of randomized controlled trials X. Zhou, Z. Xu, Y. Wang, L. Sun, W. Zhou, X. Liu