doi:10.1016/S0140-6736(11)61553-5
The Lancet, Early Online Publication, 10 October 2011
http://www.thelancet.com/journals/lancet/article/PIIS0140-6736(11)61553-5/fulltext
No evidence that patient choice in the NHS saves lives
Allyson Pollock , Alison
Macfarlane, Graham Kirkwood, F Azeem Majeed, Ian
Greener, Carlo Morelli, Seán Boyle, Howard
Mellett, Sylvia Godden, David Price, Petra
Brhlikova