1. Merck OY , Espoo , Finland ( an affiliate of Merck KGaA, Darmstadt , Germany )
2. Translational Stem Cell Biology and Metabolism Program, Research Program Unit, Faculty of Medicine, University of Helsinki , Helsinki , Finland
3. Max Planck Institute for Biology of Ageing , Cologne , Germany
4. Wellcome Centre for Mitochondrial Research, Biosciences Institute, Faculty of Medical Sciences Newcastle University , Newcastle Upon Tyne , UK
5. Merck AB , Solna , Sweden ( an affiliate of Merck KGaA, Darmstadt , Germany )
6. Department of Biochemistry and Biophysics, Stockholm University , Stockholm , Sweden
7. Translational Immunology Research Program, University of Helsinki , Helsinki , Finland
8. Helsinki University Hospital, Neurocenter , Helsinki , Finland
9. Department of Anatomy, Faculty of Medicine, University of Helsinki , Helsinki , Finland