Acknowledgements
The World Health Organization Amphetamine-Type
Stimulants Project was supported by a project grant
from the United Nations Drug Control Programme
(UNDCP), the Swiss Federal Office of Public Health,
and the Ministry of Health and Welfare of Japan. We
thank the psychiatrists from all the countries who
participated in the project and the staff of the Department
of Mental Health and Substance Dependence of
the World Health Organization.