Article History
Received: 23 April 2018
Accepted: 28 April 2018
First Online: 9 May 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in the study involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki Declaration and its later amendments, or comparable ethical standards. This study was approved by the Regional Board of Ethics (D.nr. 2009/227-31/3) at the Karolinska Institute, Stockholm, March 11, 2009. All experiments in the study comply with the current laws of Sweden.
: The authors confirm that all ongoing and related trials for this intervention are registered. The study was registered at ClinicalTrials.gov (ID NCT01413412).
: Informed consent was obtained from all individual participants included in the study.