1. Institute of BiologyLeiden University Sylviusweg 72 2333 BE Leiden The Netherlands
2. State Key Laboratory of Microbial TechnologyInstitute of Microbial TechnologyShandong University Qingdao 266237 P. R. China
3. Collaborative Mass Spectrometry Innovation CenterSkaggs School of Pharmacy and Pharmaceutical SciencesUniversity of California, San Diego 9500 Gilman Drive La Jolla CA 92093-0751 USA
4. Bruker AXS GmbH Östliche Rheinbrückenstr. 49 76187 Karlsruhe Germany
5. Stratingh Institute for ChemistryUniversity of Groningen Groningen The Netherlands