Inverse pattern of GABAergic system impairment in the external versus internal globus pallidus in male heroin addicts.

"Declarations Conflict of interestOn behalf of all authors, the corresponding author states that there is no conflict of interest. Ethical approvalThe study has been approved by the local ethics committee of the University of Magdeburg as performed in accordance with the ethical standards laid down in the Declaration of Helsinki of 1989. Consent for publicationNot applicable. Consent to participateNot applicable. Conflict of interest On behalf of all authors, the corresponding author states that there is no conflict of interest."

"Funding The Magdeburg Brain Collection and subsequently this investigation was supported in part by the Stanley Medical Research Foundation (Grant No. 07R-1832), the Saxony-Anhalt Ministry of Research (XN3594O/0405 M, N2-OVGU), the German Ministry of Research („BrainNet “, BMBF NBL-3/2 and 01ZZ0407) and the Alfried-Krupp-von-Bohlen-und-Halbach Foundation."