Fig. 1From: Biofilm formation on three different endotracheal tubes: a prospective clinical trialFlow chart showing inclusion of patients in the study. “No consent” refers to cases in which the patient did not give consent to participate after the ICU stay. Endotracheal tube materials: PVC uncoated polyvinyl chloride; SC silicon-coated PVC; NbMC noble-metal-coated PVCBack to article page