1. Charlotte Probst (charlotte.probst@camh.ca), Centre for Addiction and Mental Health, Toronto, Ontario, Canada.
2. Miriam Könen, Heidelberg University, Heidelberg, Baden-Württemberg, Germany.
3. Jürgen Rehm, Centre for Addiction and Mental Health.
4. Nikkil Sudharsanan, Technical University of Munich, Munich, Bavaria, Germany.