Author’s response to reviews Title: Effects of lubrication on air-sealing performance of a pediatric cuffed tracheal tube Authors:

Thank you for your letter of June 23, 2017 regarding our manuscript entitled “Effects of lubrication on air-sealing performance of a pediatric cuffed tracheal tube” and valuable comments from the reviewers. According to the comment, we have conducted the additional experiments using 5 more tracheal tubes with ID 5.0 mm and we found that the results with the additional samples were very similar to those of the original experiments. We have added these results and revised the manuscript. I attach here both our revised manuscript and our point-bypoint response to the reviewers’ comments. We believe that the revised manuscript addresses the comment from reviewer 3 and is suitable for publication in BMC Anesthesiology.