Ker K, Prieto-Merino D, Roberts I. Br J Surg. 2013 Sep;100(10):1271-9. doi: 10.1002/bjs.9193. Epub 2013 Jul 9.
Clinical Trials Unit, London School of Hygiene and Tropical Medicine, Keppel Street, Londres, WC1E 7HT, Reino Unido.
Ker K, Prieto-Merino D, Roberts I. Br J Surg. 2013 Sep;100(10):1271-9. doi: 10.1002/bjs.9193. Epub 2013 Jul 9.
Clinical Trials Unit, London School of Hygiene and Tropical Medicine, Keppel Street, Londres, WC1E 7HT, Reino Unido.