ß-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;

Analysis of frailty as a prognostic factor independent of age: A prospective observational study Rosario Molina Lobo; Federico Gordo Vidal; Lola Prieto López; Inés Torrejón Pérez; Antonio Naharro Abellán; Irene Salinas Gabiña; Beatriz Lobo Valbuena;

Selective decontamination of the digestive tract: concept and application Eva Esther Tejerina-Álvarez; Miguel Ángel de la Cal López;