1. Netherlands Metabolomics Centre, Einsteinweg 55, 2333 CC Leiden, The Netherlands
2. Analytical Biosciences, Leiden University, Einsteinweg 55, 2300 RA Leiden,
The Netherlands
3. TNO Research Group Quality and Safety, P.O. Box 360, 3700 AJ Zeist,
The Netherlands
4. Plant Research
International, Wageningen University and Research Centre, P.O. Box
16, 6700 AA Wageningen, The Netherlands
5. Laboratory of Biochemistry, Wageningen University and Research Centre, Dreijenlaan
3, 6703 HA Wageningen, The Netherlands
6. Centre for Biosystems Genomics, P.O. Box 98, 6700 AB Wageningen, The Netherlands