1. Chronic back pain is associated with decreased prefrontal and thalamic gray matter density;Apkarian;J. Neurosci. Official J. Soc. Neurosci.,2004
2. The neuropathic components of chronic low back pain: a prospective multicenter study using the DN4 Questionnaire;Attal;J. Pain,2011
3. Controlling the false discovery rate: a practical and powerful approach to multiple testing;Benjamini;J. R. Stat. Soc.,1995
4. Assessing tactile acuity in rheumatology and musculoskeletal medicine-How reliable are two-point discrimination tests at the neck, hand, back and foot?;Catley;Rheumatol. (United Kingdom),2013
5. Statistical Power Analysis for the Behavioral Sciences;Cohen,1988