Brunner, M.
Roth, H.
Günther, K.
Grützmann, R.
Matzel, Klaus E.
Article History
Accepted: 6 August 2019
First Online: 10 September 2019
Compliance with ethical standards
:
: K.E. Matzel is a medical adviser to Medtronic.The other authors declare that they have no conflict of interest.
: For this type of study, formal consent is not required.
: This article does not contain any studies with animals performed by any of the authors.
: This study contains no information that would enable individual patient identity.