Gillor, Moshe
Langer, Susanne
Dietz, Hans Peter
Article History
Received: 27 November 2018
Accepted: 5 March 2019
First Online: 23 March 2019
Compliance with ethical standards
:
: H.P. Dietz has received lecture honoraria and travel assistance from GE Medical. The other authors have no conflicts of interest to declare.