Christensen, Torben Røjle http://orcid.org/0000-0002-4917-148X
Arora, Vivek K.
Gauss, Michael
Höglund-Isaksson, Lena http://orcid.org/0000-0001-7514-3135
Parmentier, Frans-Jan W. http://orcid.org/0000-0003-2952-7706
Article History
Received: 1 August 2018
Accepted: 11 December 2018
First Online: 4 February 2019
Competing Interests
: The authors declare no competing interests.