1. Institute of Environmental Engineering, National Sun Yat-sen University, Kaohsiung 804, Taiwan
2. Aerosol Science and Research Center, National Sun Yat-sen University, Kaohsiung 804, Taiwan
3. Department of Public Health, Kaohsiung Medical University, Kaohsiung 807, Taiwan
4. Center for Emerging Contaminants Research, National Sun Yat-sen University, Kaohsiung 804, Taiwan