Abstract
Tim P Jürgens, Mads Barloese, Arne May, Jose Miguel Láinez, Jean Schoenen, Charly Gaul, Amy M Goodman, Anthony Caparso and Rigmor Højland Jensen. Long-term effectiveness of sphenopalatine ganglion stimulation for cluster headache. Cephalalgia. Epub ahead of print 9 May 2016. DOI:
The authors have discovered an error on page 5, left column, line 6, erroneously mentioning 17 ± 3. The correct wording should be:
In the entire population, the average attack frequency at these two time points was unchanged (17 ± 14 (range 5–70) and 17 ± 15 (range 0–50) attacks per week, respectively).
The authors apologize for the error.