**Acknowledgements**

This work is part of the ABRAÇO Initiative for the Brachial Plexus Injury (http://abraco.numec. prp.usp.br/) of the Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)'s Research, Innovation and Dissemination Center for Neuromathematics (grant 2013/07699-0, http://neuromat.numec.prp.usp.br/). It was also supported by the Conselho Nacional de Pesquisa (CNPq) (grants 306817/2014-4 and 309560/2017-9) and the Fundação de Amparo à Pesquisa do Rio de Janeiro FAPERJ (grants E-26/111.655/ 2012, E26/010.002902/2014 and E-26/010.002474/2016).
