1. Center for Environmental Biotechnology, Biodesign Institute at Arizona State University, Tempe, AZ 85287-5801.
2. Wastewater Engineering Division, National Institute of Environmental Research, Ministry of Environment, Environmental Research Complex, Incheon 404-170, Korea.
3. International Water and Wastewater Research Center, Korea Institute of Water and Environment, Daejeon 306-711, Korea.
4. Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau SAR, China.
5. Department of Civil Engineering, Kangnung National University, Kangwon-do, Korea.