Funding for this research was provided by:
Försvarsmakten (Grant #AF9220914)
Article History
Received: 3 September 2018
Accepted: 8 November 2018
First Online: 13 December 2018
Ethics Approval and Consent to Participate
: Not applicable in the meta-analysis.
: Not applicable in the meta-analysis.
: The authors, Henrik Petré, Fredrik Wernstål, and C. Mikael Mattsson, declare that they have no competing interests.
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