1. Brazilian Agricultural Research Corporation - Embrapa Soybean; P.O. Box 231, Londrina 86001-970 Brazil
2. Department of Nutrition; Philadelphia University Center; Juscelino Kubitschek Avenue, 1626, Londrina 86020-001 Brazil
3. Brazilian Agricultural Research Corporation - Embrapa Meio Ambiente; P. O. Box 69, Jaguariúna 13820-000 Brazil
4. Brazilian Agricultural Research Corporation - Embrapa Meio-Norte; P. O. Box 001, Teresina Piauí 64008-780 Brazil
5. Brazilian Agricultural Research Corporation - Embrapa Rondônia; P.O. Box 406, Porto Velho Rondônia 78900-970 Brazil