1. Section of Epidemiology, Shizuoka Graduate University of Public Health
2. Department of Preventive Medicine, College of Medicine, Dankook University
3. Radio Technology Research Department, Electronics and Telecommunications Research Institute (ETRI)
4. Department of Preventive Medicine, College of Medicine, The Catholic University of Korea
5. Electromagnetic Compatibility Laboratory, National Institute of Information and Communications Technology
6. Laboratoire de Traitement et Communication de l’Information (LTCI), Telecom Paris, Institut Polytechnique de Paris
7. Spanish Consortium for Research and Public Health (CIBERESP), Instituto de Salud Carlos III
8. Pompeu Fabra University