1. University of Toronto, Ontario, Canada
2. The Hong Kong Polytechnic University, Kowloon, Hong Kong
3. Karolinska Institutet, Stockholm, Sweden
4. Karolinska University Hospital, Stockholm, Sweden
5. Stockholms Sjukhem, Sweden
6. University of Alberta, Edmonton, Canada
7. University of Copenhagen, Denmark
8. Herlev and Gentofte Hospital, Denmark