1. School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, S-106 91 Stockholm, Sweden
2. Division of Clinical Geriatrics, Center for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, S-141 86 Stockholm, Sweden
3. Theme Aging, The Aging Brain, Karolinska University Hospital, Huddinge, S-141 86 Stockholm, Sweden
4. Department of Physics and Astronomy, Uppsala University, Uppsala SE-75120, Sweden
5. College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China