1 Department of Clinical Molecular Biology, University of Oslo and Akershus University Hospital, Lørenskog 1478, Norway; Key Laboratory of Oral Health Research in Hunan Province, Xiangya Stomatological Hospital, Xiangya School of Stomatology, Central South University, China.
2 Department of Clinical Molecular Biology, University of Oslo and Akershus University Hospital, Lørenskog 1478, Norway.
3 Memory Clinic, Department of Neurology, Second Faculty of Medicine, Charles University and Motol University Hospital, Prague, Czech Republic.
4 Department of Clinical Molecular Biology, University of Oslo and Akershus University Hospital, Lørenskog 1478, Norway; The Norwegian Centre on Healthy Ageing (NO-Age), Oslo, Norway. Electronic address: [email protected].