Acknowledgements This research was supported by Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Proc. 2005/60236-1, and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES).
ถาม-ตอบงานวิจัยนี้ได้รับการสนับสนุน โดย Fundação de Amparo àโด Pesquisa Estado เดอเซาเปาลู (FAPESP) Proc. 2005/60236-1 และ Coordenação de Aperfeiçoamento de Pessoal de Nível ห้อง (CAPES)