Author contributions
Godoy BS and Holanda LFR conceived the ideas, designed methodology;
Holanda LFR and Queiroz LL collected the data; Godoy BS analyzed the
data; Godoy BS, Queiroz LL and Valente-Neto F wrote the original
manuscript. Roque FO, Lodi S and Oliveira LG revised the final
manuscript. All authors contributed critically to the drafts and gave
final approval for publication.