Department of Intensive Care, The Third Hospital, Hebei Medical University, Shijiazhuang, Hebei Province, P.R. China. Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Milan, Italy; Vita-Salute San Raffaele University of Milan, Milan, Italy. Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Milan, Italy. Department of Anesthesia and Intensive Care, Siberian Biomedical Research Center of the Ministry of Health, Novosibirsk, Russia. Department of Anesthesia and Intensive Care, Medical Center of Saint-Petersburg State University, Saint-Petersburg, Russia. Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Milan, Italy; Department of Anesthesia and Intensive Care, Siberian Biomedical Research Center of the Ministry of Health, Novosibirsk, Russia. Electronic address: evfominskiy@gmail.com.