1. Department of Orthodontic Science, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan
2. Department of Orthodontics, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand
3. Department of Pediatrics, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
4. Pharmaceutical/Beauty Science Research Center, Material Business Division, Hosokawa Micron Corporation, Osaka 573-1132, Japan
5. AnGes Inc., Tokyo 108-0014, Japan