Fig. 1From: Extracorporeal carbon dioxide removal for acute hypercapnic exacerbations of chronic obstructive pulmonary disease: study protocol for a randomised controlled trialExample template of recommended content for the schedule of enrolment, interventions, and assessments (recommended content can be displayed using various schematic formats; see SPIRIT 2013 Explanation and Elaboration for examples from protocols) (Additional File 2). **List specific timepoints in this rowBack to article page