- Polymorphisms in the NMDA subunit 2B are not associated with alcohol dependence and alcohol withdrawal-induced seizures and delirium tremens. Tadic, A., Dahmen, N., Szegedi, A., Rujescu, D., Giegling, I., Koller, G., Anghelescu, I., Fehr, C., Klawe, C., Preuss, U.W., Sander, T., Toliat, M.R., Singer, P., Bondy, B., Soyka, M. European archives of psychiatry and clinical neuroscience. (2005)