The OPERA trial - comparison of early nasal high flow oxygen therapy with standard care for prevention of postoperative hypoxemia after abdominal surgery: study protocol for a multicenter randomized controlled trial

Peer Review reports

Original Submission
6 Aug 2013	Submitted	Original manuscript
24 Sep 2013	Reviewed	Reviewer Report - Graeme MacLennan
30 Sep 2013	Author responded	Author comments - Emmanuel Futier
Resubmission - Version 2
30 Sep 2013	Submitted	Manuscript version 2
Publishing
4 Oct 2013	Editorially accepted
18 Oct 2013	Article published	10.1186/1745-6215-14-341

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