1. Family Medicine Research Centre; Örebro County Council; School of Health and Medical Sciences; Örebro University; Örebro Sweden
2. Clinical Epidemiology and Biostatistics; Faculty of Medicine and Health; Örebro University; Örebro Sweden
3. School of Health and Medical Sciences; Örebro University; Örebro Sweden
4. Department of Neurobiology; Care Sciences and Society; Unit of Family Medicine; Karolinska Institutet; Huddinge Sweden
5. Division of Community Medicine; Department of Medicine and Health Sciences; Faculty of Health Sciences; Linköping University; Department of Local Care West, County Council of Östergötland; Linköping Sweden
6. Department of Public Health and Clinical Medicine; Family Medicine; Umeå University; Umeå Sweden