Katsarava, Zaza
Mania, Maka
Lampl, Christian
Herberhold, Johanna
Steiner, Timothy J.
Article History
Received: 22 November 2017
Accepted: 18 January 2018
First Online: 1 February 2018
Competing interests
: TJS and ZK are directors and trustees of Lifting The Burden, a charitable organization whose purpose, pursued in official relations with the World Health Organization, is to reduce the burden of headache worldwide. There were no conflicts of interest relating to the content of this manuscript.
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