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. 2018 Feb 13;17:23. doi: 10.1186/s12938-018-0454-z

Fig. 9.

Fig. 9

Piezoelectric accelerometer a scheme of the accelerometer (I) and its parts. b Photograph of the prototype (I)

(Adapted from [73] with permission of Taylor & Francis Ltd, http://www.tandfonline.com on behalf of Acta Oto-Laryngologica AB (Ltd))