1. Steinbeis Transfer Centre for Biopolymer Analysis and Biomedical Mass Spectrometry (STZ), Marktstrasse 29, 65428 Rüsselsheim am Main, Germany
2. Institute for Microtechnologies (IMTECH), Rhein Main University, 65428 Rüsselsheim am Main, Germany
3. Department of Immunology, Proteome Centre, Medical University Rostock, Schillingallee 69, 18055 Rostock, Germany
4. Sunchrom GmbH, Industriestr. 27, 61381 Friedrichsdorf, Germany