List of Articles Azad Haghighi Asl Article 1 - Comparative Risk Assessment of Tasks Involved with Nanomaterials Using NanoTool & Guidance Methods 10.22034/jchr.2021.1909971.1185 Fakhradin Ahmadi Kanrash Soqrat Omari Shekaftik Amirhossein Aliakbar Fatemeh Soleimany Azad Haghighi Asl Wahab Ebrahimi Saeedeh Amini Ravandi Journal of Chemical Health Risks , Issue 4 , Year , Summer 2022