[1]Institute of Inflammation and Ageing Birmingham University Medical School Birmingham B15 2TT UK;
[2]Scar Free Foundation Centre for Burns Research University Hospital Birmingham Foundation Trust Birmingham B15 2WB UK;
[3]Institute of Metabolism and Systems Research and Centre for Endocrinology Diabetes and Metabolism The University of Birmingham Birmingham B15 2TT UK;
Vitamin D; Critical care; Burns; Trauma; Thermal injury; Critically ill;