Schullian, Peter
Johnston, Edward W.
Putzer, Daniel
Eberle, Gernot
Laimer, Gregor
Bale, Reto
Article History
Received: 31 October 2019
Accepted: 13 January 2020
First Online: 31 January 2020
Competing interests
: Reto Bale is a consultant for CAScination. All other authors have no conflicts of interest to disclose.