1. Validation of the German Version of the Brief Pain Inventory
Lukas Radbruch, MD, Georg Loick, MD, Peter Kiencke, Gabriele Lindena, DVM, Rainer Sabatowski, MD, Stephan Grond, MD, Klaus A. Lehmann, MD, Charles S. Cleeland, PhD 
Journal of Pain and Symptom Management 
Volume 18, Issue 3, Pages (September 1999)
DOI: /S (99)

2. Fig. 1
Factor loading plot of the German version of the Brief Pain Inventory using two factors with an explained variance of 68.4%
Journal of Pain and Symptom Management  , DOI: ( /S (99) )

3. Appendix 1
Journal of Pain and Symptom Management  , DOI: ( /S (99) )

4. Appendix 1
Journal of Pain and Symptom Management  , DOI: ( /S (99) )