Maintenance work on the ZORA databases is scheduled for Wednesday 22 May 2019 from 20:00-22:00. During this period ZORA and JDB will not be available. Thank you for your understanding.
Domenighetti, Gianfranco; Tomamichel, Michele; Gutzwiller, Felix; Berthoud, Silvio; Casabianca, Antoine (1991). Psychoactive drug use among medical doctors is higher than in the general population. Social Science & Medicine, 33(3):269-274.