*L. J. Stovner , G. Oftedal , A. Straume, A. Johnsson. Nocebo as headache trigger: evidence from a sham-controlled provocation study with RF fields. Acta Neurologica Scandinavica. Apr. 2008. Vol 117 188, Seiten 67 - 71 | *L. J. Stovner , G. Oftedal , A. Straume, A. Johnsson. Nocebo as headache trigger: evidence from a sham-controlled provocation study with RF fields. Acta Neurologica Scandinavica. Apr. 2008. Vol 117 188, Seiten 67 - 71 |