1. Aging Research Center, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet and Stockholm University, Stockholm, Sweden
2. Stress Research Institute, Stockholm University, Stockholm, Sweden
3. Department of Psychology, University of Southern California, Los Angeles, CA, USA
4. Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
5. Department of Medical and Surgery Sciences, University of Brescia, Brescia, Italy
6. Stockholm Gerontology Research Center, Stockholm, Sweden