1. Division of Periodontology & Implant Dentistry Faculty of Dentistry University of Hong Kong Hong Kong SAR P. R. China
2. Department of Implant Dentistry Beijing Stomatological Hospital Capital Medical University Beijing P. R. China
3. Division of Cardiology Department of Medicine Li Ka Shing Faculty of Medicine University of Hong Kong Hong Kong SAR P. R. China
4. Division of Cardiology Department of Medicine University of Hong Kong—Shenzhen Hospital Shenzhen P. R. China