未受診の患者より受診した患者の方が症状が強い
A comparison of the clinical features of fibromyalgia syndrome in different settings.
Häuser W, Biewer W, Gesmann M, Kühn-Becker H, Petzke F, Wilmoswky HV, Langhorst J, Glaesmer H.
Eur J Pain. 2011 Jun 6. [Epub ahead of print]