de Graaf, Nastasja M.
Giovanardi, Guido
Zitz, Claudia
Carmichael, Polly
Article History
Received: 12 February 2018
Accepted: 21 March 2018
First Online: 25 April 2018
Compliance with Ethical Standards
:
: The authors declare there is no conflict of interest. There was no sponsor involved in this Letter. The authors disclose that there are no prior publications or submissions with any overlapping information of this kind.