Active expiration reduces hypercapnia in lung failure – results of the prospective interventional ActiveEx study and development of a prototype device for automated application - Denis Witham; Julius Valentin Kunz; Ann-Christin Krebs; Karoline Brückner; Roland Körner; Mareen Pigorsch; Kai-Uwe Eckardt; Paul Uwe Thamsen; Philipp Enghard; Julija Peter (PLoS ONE, 2025)