1. Drug Theoretics and Cheminformatics Laboratory Department of Pharmaceutical Technology Jadavpur University Kolkata 700032 India
2. Interdisciplinary Center for Nanotoxicity Department of Chemistry, Physics and Atmospheric Sciences Jackson State University Jackson MS-39217 USA
3. Department of Environmental Science, Section for Toxicology and Chemistry Aarhus University Frederiksborgvej 399 DK-4000 Roskilde Denmark