1. Department of Biochemistry and Molecular Biology, Laboratory of Preventive and Integrative Biomedicine; Jahangirnagar University; Savar, Dhaka 1342 Bangladesh
2. Scientific Officer; Columbia University Arsenic and Health Research Project, (NIEHS, USA Superfund Research Program), Araihazar; Narayangong, Dhaka Bangladesh
3. Human Genome Centre, School of Medical Sciences; Universiti Sains Malaysia, 16150 Kubang Kerian; Kelantan Malaysia