Souza, Daniel C.
Viana, Ricardo B.
Coswig, Victor S.
Fisher, James P.
Steele, James
Gentil, Paulo http://orcid.org/0000-0003-2459-4977
Article History
First Online: 2 February 2018
Compliance with Ethical Standards
:
: No sources of funding were used to assist in the preparation of this letter.
: Daniel Costa de Souza, Ricardo Borges Viana, Victor Silveira Coswig, James P. Fisher, James Steele and Paulo Gentil declare that they have no conflicts of interest relevant to the content of this letter.