Butler C, Doree C, Estcourt LJ, Trivella M, Hopewell S, Brunskill SJ, Stanworth S, Murphy MF. Cochrane Database Syst Rev. 2013 Mar 28;3:CD009072. doi: 10.1002/14651858.CD009072.pub2.
Departamento de Hematologia, Oxford Radcliffe Hospital NHS Trust, Maidenhead, Reino Unido.