Erbguth, Frank http://orcid.org/0000-0002-9271-198X
Lange, Rüdiger
Article History
Received: 21 March 2021
Accepted: 20 April 2021
First Online: 1 June 2021
Declarations
:
: The authors confirm that the approval of an institutional review board was not required for this work. Written patient consent was not required for this work. Verbal consent was obtained from patients by agreeing to answer the study questions during the botulinum toxin treatment session.
: Frank Erbguth received speaker honoraria from Boehringer Ingelheim, Ipsen Pharma, Portola and Alexion. Rüdiger Lange has no conflicts of interest to declare.