The clinical and cost effectiveness of surgical interventions for stones in the lower pole of the kidney: the percutaneous nephrolithotomy, flexible ureterorenoscopy and extracorpo... oleh Sam McClinton, Kathryn Starr, Ruth Thomas, Graeme MacLennan, Thomas Lam, Rodolfo Hernandez, Robert Pickard, Ken Anson, Terry Clark, Steven MacLennan, David Thomas, Daron Smith, Ben Turney, Alison McDonald, Sarah Cameron, Oliver Wiseman