1. Department of Cell and Molecular Biology, Uppsala University, S-75124 Uppsala, Sweden
2. Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, S-17165 Solna, Sweden
3. Bioproducts and Biosystems, Aalto University, Fi-00076 Aalto, Espoo, Finland
4. Department of Anatomy Physiology and Biochemistry, Swedish University of Agricultural Sciences, S-75007 Uppsala, Sweden
5. Department of Biosciences and Nutrition, Karolinska Institutet, S-14157 Huddinge, Sweden
6. Department of Biology and Chemistry, Paul Scherrer Institute, 5232 Villingen, Switzerland