- Correspondence to: Professor A L F Braga Programa de Pediatria Ambiental, Faculdade de Medicina de Santo Amaro–UNISA/, Hospital Geral do Grajaú, Rua Francisco Octávio Pacca, 180, 4° Andar, CEP 04822-320, Grajaú, São Paulo, SP, Brazil;
- Accepted May 27, 2003
- First published December 18, 2003.
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