Article Takedown/Update Request

This is an update request for the document Early intervention with tiotropium in Chinese patients with GOLD stages I–II chronic obstructive pulmonary disease (Tie-COPD): study protocol for a multicentre, double-blinded, randomised, controlled trial by Xiaochen Li, Yumin Zhou, Shuyun Chen, Jinping Zheng, Nanshan Zhong and Pixin Ran

Your paper was deposited in MUCC (Crossref) and appears online at http://bmjopen.bmj.com/content/bmjopen/4/2/e003991.full.pdf
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