1. Paracetamol and selective and non-selective non-steroidal anti-inflammatory drugs for the reduction in morphine-related side-effects after major surgery: a systematic review 
E Maund, C McDaid, S Rice, K Wright, B Jenkins, N Woolacott 
British Journal of Anaesthesia 
Volume 106, Issue 3, Pages (March 2011)
DOI: /bja/aeq406
Copyright © 2011 The Author(s) Terms and Conditions

2. Fig 1 Flow diagram of trial selection.
British Journal of Anaesthesia  , DOI: ( /bja/aeq406)
Copyright © 2011 The Author(s) Terms and Conditions

3. Fig 2
Network of studies for 24 h morphine consumption. The numbers represent the number of studies in which the two treatments are compared. If a study compares three treatments, it will be counted three times.
British Journal of Anaesthesia  , DOI: ( /bja/aeq406)
Copyright © 2011 The Author(s) Terms and Conditions