Figure 1From: Low Serum retinol-binding protein-4 levels in acute exacerbations of chronic obstructive pulmonary disease at intensive care unit admission is a predictor of mortality in elderly patientsRBP4 levels in AECOPD patients among the different groups. (a) RBP4 levels in survivors and non-survivors. (b) RBP4 in patients with sepsis and those without sepsis. (c) RBP4 levels in patients with diabetes and those without diabetes.Back to article page