1. Does regional anaesthesia improve outcome after total hip arthroplasty
Does regional anaesthesia improve outcome after total hip arthroplasty? A systematic review 
A.J.R. Macfarlane, G.A. Prasad, V.W.S. Chan, R. Brull 
British Journal of Anaesthesia 
Volume 103, Issue 3, Pages (September 2009)
DOI: /bja/aep208
Copyright © 2009 British Journal of Anaesthesia Terms and Conditions

2. Fig 1 Flow chart of screened, excluded and analysed papers.
British Journal of Anaesthesia  , DOI: ( /bja/aep208)
Copyright © 2009 British Journal of Anaesthesia Terms and Conditions