1. Department of Chemistry
2. Guru Nanak Dev University
3. Amritsar-143005
4. India
5. School of Molecular and Cell Biology
6. University of the Witwatersrand
7. Private Bag 3
8. Johannesburg
9. South Africa
10. School of Chemistry and Physics
11. University of KwaZulu Natal
12. P/Bag X54001
13. Westville
14. Durban 4000