Funding for this research was provided by:
Ministério da Ciência, Tecnologia e Inovação (202242/2015-3)
First Online: 28 June 2018
Compliance with Ethical Standards
: Caroline Bolling is a PhD candidate supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico 1—CNPq, Brazil (Grant Number 202242/2015-3). No other sources of funding were used to assist in the preparation of this article.
: Caroline Bolling, Willem van Mechelen, Roeline Pasman and Evert Verhagen declare that they have no conflicts of interest relevant to the content of this review.