Fig. 1From: Effect of different feeding methods on gastrointestinal function in critical patients (DFM-GFC): study protocol for a randomized controlled trialSPIRIT schedule of enrolment, interventions, and assessments. Liver function includes alanine aminotransferase (U/L), aspartate aminotransferase (U/L), total bilirubin (μmol/L), direct bilirubin (μmol/L), and albumin (g/L). Renal function includes blood creatinine (mmol/L) and urea (mmol/L)Back to article page