1. College of Life Science, Northwest University, Taibai North Road 229, Xi’an, Shaanxi 710069, P. R. China
2. Chair of Proteomics and Bioanalytics, Technical University of Munich, Emil Erlenmeyer Forum 5, 85354 Freising, Germany
3. Thermo Fisher Scientific, Dornierstraße 4, 82110 Germering, Germany
4. Bavarian Biomolecular Mass Spectrometry Center (BayBioMS), Technical University of Munich, Gregor-Mendel-Straße 4, 85354 Freising, Germany