From: Non-prescribed use of methadone and buprenorphine prior to opioid substitution treatment: lifetime prevalence, motives, and drug sources among people with opioid dependence in five Swedish cities
City
Number
Proportion (%)
Malmö
196
47.7
Göteborg
118
28.7
Lund
54
13.1
Norrköping
22
5.4
Jönköping
21
5.1
Total
411
100.0