1. Curriculum in Toxicology, University of North Carolina at Chapel Hill, North Carolina, United States
2. Institute of Analytical Chemistry of the ASCR, v.v.i., Brno, Czech Republic
3. Department of Analytical Chemistry, Faculty of Science, Charles University in Prague, Prague, Czech Republic
4. Instituto de Química, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
5. Department of Nutrition, University of North Carolina at Chapel Hill, North Carolina, United States