1. Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam , Amsterdam, The Netherlands
2. Prosthetic Dental Science Department, College of Dentistry, King Saud University , Riyadh, Saudi Arabia
3. Department of Cardiology, Vrjie Universiteit Medical Centre , Amsterdam, The Netherlands
4. Faculty of Dentistry, Removable Prosthodontics Department, Cairo University , Giza, Egypt