Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) FREGNI F.,"A randomized, sham-controlled, proof of principle study of transcranial direct current stimulation for the treatment of pain in fibromyalgia",Arthritis & Rheumatism,,,2004,54,12,456-460,https://cir.nii.ac.jp/crid/1570572701256551296,