1. Non-invasive vagus nerve stimulation for PREVention and Acute treatment of chronic cluster headache (PREVA): A randomised controlled study. (May 2016) Authors: Gaul, Charly; Diener, Hans-Christoph; Silver, Nicholas; Magis, Delphine; Reuter, Uwe; Andersson, Annelie; Liebler, Eric J; Straube, Andreas Journal: Cephalalgia Issue: Volume 36:Number 6(2016) Page Start: 534 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗