(2010 till now): Prof. of Forensic Medicine and Toxicology (2005 - 2010): Assistant Prof. of Forensic Medicine and Toxicology (2000- 2005): Lecturer of Forensic Medicine and Toxicology, Dept. of Pharmacology and Forensic Medicine and Toxicology. (1994-2000): Assistant lecturer of Forensic Medicine and Toxicology, Dept. of Pharmacology and Forensic Medicine and Toxicology. (1989-1994): Demonstrator of Forensic Medicine and Toxicology, Dept. of Pharmacology and Forensic Medicine and Toxicology.