1. Helmholtz Zentrum Muenchen, Institute of Ecological Chemistry, Department of BioGeoChemistry and Analytics, German Research Center for Environmental Health, Ingolstädter Landstraβe 1, D-85758 Neuherberg, Germany, Department of Analytical Chemistry, Marie Curie Building (Annex), Campus de Rabanales, University of Cordoba, E-14071 Cordoba, Spain, Division of Clinical Chemistry and Pathobiochemistry (Central Laboratory), Department of Internal Medicine 4, University Hospital of Tuebingen, D-72076 Tuebingen,...