1 State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
2 Department of Physiology and Pathophysiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, China.
3 Department of Clinical Molecular Biology, University of Oslo and Akershus University Hospital, Lørenskog, Norway.
4 The Norwegian Centre on Healthy Ageing (NO-Age), Oslo, Norway.