1. Department of Environmental Epidemiology; Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health; Kitakyushu City; Japan
2. Department of Epidemiology; Institute of Preventive Medicine and Public Health, Hanoi Medical University; Vietnam
3. Department of Preventive Medicine; Health Sciences, University of Mongolia; Mongolia
4. World Health Organization, European Centre for Environment and Health, Regional Office for Europe; Bonn; Germany