1. Chiang Mai University,Biomedical Engineering Institute,Chiang Mai,50200
2. Chulalongkorn University,Dental Stem Cell Biology Research Unit,Department of Anatomy Faculty of Dentistry,Bangkok,Thailand,10330
3. Nippon Institute of Technology,Faculty of Fundamental Engineering,Department of Applied Chemistry,Saitama,Japan,345-8501
4. Chulabhorn Royal Academy,Princess Srisavangavadhana College of Medicine,Bangkok,Thailand,10210