Received: 14 August 2018
Accepted: 1 February 2019
First Online: 25 February 2019
Compliance with ethical standards
: Juliane Marschke: (speaker honorar) AMS, Astellas. Christl Reisenauer: (speaker honorar) Astellas, AMS, Allergan, Medtronic, Coloplast. Tomi S Mikkola: Unrestricted grant from Contura, speaker for Astellas and Mylan. Ralf Tunn: (speaker honorar) AMS, Astellas, Allergan, Promedon. Markus Huebner: None.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.