Bhalla, Amandeep
Cha, Thomas D.
Weber, Clemens
Nerland, Ulf
Gulati, Sasha
Lønne, Greger http://orcid.org/0000-0003-2191-9676
Funding for this research was provided by:
Fulbright Association (68150249)
Article History
Received: 19 October 2017
Accepted: 29 December 2017
First Online: 19 January 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of, and approved by, ethical review boards in Norway (REC South-east: 2015/1909 C) and at Partners Healthcare in Boston (IRB: 2015P002004) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. For this type of retrospective study, formal consent is not required in the USA, informed consent was obtained from all individual participants included in the study from Norway.