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Article History

Received: 4 September 2017

Accepted: 16 February 2018

First Online: 27 February 2018

Ethics approval and consent to participate

: The study was approved by the University of East London Ethics Committee (UREC_1415_29) and all experiments were conducted in accordance with the Declaration of Helsinki. All volunteers spontaneously agreed to participate in the study by giving written informed consent.

: Written informed consent for publication of her image reported in Fig.InternalRef removedwas obtained from author S.P. Written informed consent for publication of her data reported in Fig. InternalRef removedwas obtained from the subject P.S. A copy of the consent forms is available for review upon request.

: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could construed as a potential competing interest.

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