1. History of knee surgery is associated with higher prevalence of neuropathic pain-like symptoms in patients with severe osteoarthritis of the knee 
Ana M. Valdes, MA, PhD, Anu K. Suokas, MSc, PhD, Sally A. Doherty, RGN, Wendy Jenkins, RGN, Michael Doherty, MD, FRCP 
Seminars in Arthritis and Rheumatism 
Volume 43, Issue 5, Pages (April 2014)
DOI: /j.semarthrit
Copyright © 2014 The Authors Terms and Conditions

2. Fig. 1
Diagram of study recruitment. All study participants were recruited from secondary care in the Nottinghamshire area between January 2010 and October 2012.
Seminars in Arthritis and Rheumatism  , DOI: ( /j.semarthrit )
Copyright © 2014 The Authors Terms and Conditions