1. Department of Clinical Research University Hospital Basel Basel Switzerland
2. University of Basel Basel Switzerland
3. Department of Psychology University of Maryland College Park Maryland USA
4. Center for Substance Use, Addiction & Health Research (CESAR) University of Maryland College Park Maryland USA
5. Cardiovascular Intensive Care Unit Orlando Regional Medical Center Orlando Florida USA
6. Division of Infectious Diseases Massachusetts General Hospital Boston Massachusetts USA
7. Harvard Medical School Boston Massachusetts USA
8. Centre for Community Based Research, Human Sciences Research Council Pietermaritzburg KwaZulu‐Natal South Africa
9. SAMRC/WITS Developmental Pathways for Health Research Unit University of the Witwatersrand Johannesburg Gauteng South Africa