1 Department of Applied Psychology, Zurich University of Applied Sciences, CH-8037 Zurich Switzerland. Electronic address: michaelpascal.hengartner@zhaw.ch.
2 Department of Crisis Intervention and Suicide Prevention, Christian Doppler Klinik, Paracelsus Medical University, Salzburg, Austria.
3 Alcohol Treatment Unit, University Hospital Amiens, Amiens, France.
4 The Copenhagen Trial Unit, Centre for Clinical Intervention Research, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark.