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;

Intensive care during the 2019-coronavirus epidemic A. González-Castro; P. Escudero-Acha; Y. Peñasco; O. Leizaola; V. Martínez de Pinillos Sánchez; A. García de Lorenzo;