Acknowledgments

I would like to thank the Social Medicine Institute of the State University of Rio de Janeiro, for the research leave that made this project possible. Also, special thanks to Utrecht University for practical support and for the kind of reception they provide me. Also, thanks to Toine Pieters, who was optimistic aI would like to thank the Social Medicine Institute of the State University of Rio de Janeiro, for the research leave that made this project possible. Special thanks to Utrecht University for practical support and for the kind of reception they provide me. Thanks to Toine Pieters, who was optimistic about this project since the beginning, and to Arjan van Hessen, who taught me patiently how to deal with new gadgets and sound waves. Finally, thanks to my colleague Washington Junger, whose stimulus to work on this website despite all the difficulties in Brazil probably made this site possible.

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