1. Institute of Biology, University of Graz, 8010 Graz, Austria
2. Research Unit of Osteology and Analytical Mass Spectrometry, Medical University, University Children’s Hospital, 8036 Graz, Austria
3. Institute of Pharmaceutical Sciences, University of Graz, 8010 Graz, Austria
4. Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, California 91125, United States of America
5. Department of Biosciences, University of Salzburg, 5020 Salzburg, Austria