Barmherzig, Rebecca
Szperka, Christina L.
Article History
First Online: 10 July 2019
Compliance with Ethical Standards
:
: Dr. Barmherzig declares no conflict of interest. Dr. Szperka has received grant support from Pfizer. Allergan provides consulting payments for work done by Dr. Szperka to the CHOP Paediatric Headache Program.
: This article does not contain any studies with human or animal subjects performed by any of the authors.