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- Published online February 9, 2012.
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- *Dept of Pulmonary Medicine, Gentofte University Hospital, Copenhagen, Denmark
- #Global Medical Affairs & Clinical Research, McNeil AB, Helsingborg, Sweden
- ¶Dept of Addictive Behaviour and Addiction Medicine, Central Institute of Mental Health, University of Heidelberg, Germany
- +Dept of Psychiatry and Psychotherapy, Section for Addiction Medicine and Research, University Hospital of Tübingen, Germany
- §Equal contribution
- P. Tønnesen, Dept of Pulmonary Medicine, Gentofte University Hospital, DK-2900 Hellerup, Denmark, E-mail: philipt{at}dadlnet.dk