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. 2015 Dec 19;11:1. doi: 10.1186/s40248-015-0037-9

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© Lucato et al. 2015

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — Photographs of the dispositives: a Manovacuometer used in a conventional way. b Manovacuometer and HME employed. c Respirometer used in a conventional way. d Respirometer and HME employed. Legend: (1) Manovacuometer; (2) Trachea; (3) Disposable mouthpiece; (4) HME and (5) Respirometer