High-dose N-acetylcysteine for long-term, regular treatment of early-stage chronic obstructive pulmonary disease (GOLD I–II): study protocol for a multicenter, double-blinded, parallel-group, randomized controlled trial in China

Peer Review reports

Original Submission
19 Dec 2019	Submitted	Original manuscript
5 May 2020	Reviewed	Reviewer Report - Alexander Gough
19 May 2020	Reviewed	Reviewer Report - Rachel Jordan
3 Jul 2020	Author responded	Author comments - HeShen Tian
Resubmission - Version 2
3 Jul 2020	Submitted	Manuscript version 2
21 Jul 2020	Reviewed	Reviewer Report - Alexander Gough
Resubmission - Version 3
	Submitted	Manuscript version 3
Publishing
27 Aug 2020	Editorially accepted
11 Sep 2020	Article published	10.1186/s13063-020-04701-8

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