Institution: | (1) Department of Analytical Chemistry, Free University, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands;(2) Department of Applied Nutrition and Food Chemistry, University of Lund, P.O. Box 124, 22100 Lund, Sweden;(3) Department of Analytical Chemistry, University of Lund, P.O. Box 124, 22100 Lund, Sweden;(4) Present address: Pharma Bio-Research International B.V., P.O. Box 200, 9470 AE Zuidlaren, The Netherlands |