1. Sensor and Actuator Systems, Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping, Sweden
2. Advanced Research Center for Oral and Craniofacial Sciences Dental School, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
3. Department of Orthodontics, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan