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

Systematic review and meta-analysis M. Delgado-Rodríguez, M. Sillero-Arenas

β-lactam antibiotics to prevent ventilator-associated pneumonia (VAP) in coma patients: A systematic review and meta-analysis of randomized controlled trials Edinson Dante Meregildo-Rodriguez, Mariano Ortiz-Pizarro, Martha Genara Asmat-Rubio, Carlos Geraldo Fernandez-Narváez, Gustavo Adolfo Vásquez-Tirado