Pharmacopsychiatry, Table of Contents Pharmacopsychiatry 1999; 32(4): 159DOI: 10.1055/s-2007-979225 Letters to the Editor © Georg Thieme Verlag Stuttgart · New YorkNorharman - is it an Exclusively Endogenous Modulator of Behavior?U. Breyer-Pfaff Department of Toxicology, University of Tübingen, Germany Recommend Article Abstract PDF Download(opens in new window) Buy Article(opens in new window) PDF (103 kb)