Ker K, Edwards P, Perel P, Shakur H, Roberts I. BMJ. 2012 May 17;344:e3054. doi: 10.1136/bmj.e3054.
Clinical Trials Unit, London School of Hygiene and Tropical Medicine, Londres WC1E 7HT, Reino Unido.
Ker K, Edwards P, Perel P, Shakur H, Roberts I. BMJ. 2012 May 17;344:e3054. doi: 10.1136/bmj.e3054.
Clinical Trials Unit, London School of Hygiene and Tropical Medicine, Londres WC1E 7HT, Reino Unido.