Author Contributions: Drs Kotwal, Wenzel, and
Petruccelli had full access to all of the data in the study and take responsibility
for the integrity of the data and the accuracy of the data analysis.
Study concept and design: Kotwal, Wenzel, Petruccelli.
Acquisition of data: Kotwal, Wenzel, Sterling,
Analysis and interpretation of data: Kotwal,
Wenzel, Porter, Jordan, Petruccelli.
Drafting of the manuscript: Kotwal, Wenzel.
Critical revision of the manuscript for important
intellectual content: Kotwal, Wenzel, Sterling, Porter, Jordan, Petruccelli.
Statistical analysis: Kotwal, Sterling, Porter,
Administrative, technical, or material support:
Kotwal, Wenzel, Jordan, Petruccelli.
Study supervision: Kotwal, Petruccelli.
Funding/Support: No outside funding or support
was received for this study.
Role of the Sponsor: The study design and conduct,
data collection and management, data analysis and interpretation, and manuscript
preparation and review were conducted solely by the authors. Approval to release
the manuscript was obtained through Headquarters, 75th Ranger Regiment and
the US Army Special Operations Command.
Disclaimer: The views, opinions, and/or findings
contained in this report are those of the authors and should not be construed
as official US Department of the Army or Department of Defense position, policy,
or decision, unless so designated by other official documentation.