West, Jens http://orcid.org/0000-0003-3043-8145
Börjesson, Maria http://orcid.org/0000-0001-9235-0232
Funding for this research was provided by:
VINNOVA (2013-03091)
Swedish Transport Administration
Article History
First Online: 18 January 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.