1. Department of General Practice; Virginia Commonwealth University School of Dentistry; Richmond Virginia USA
2. Department of Biostatistics; Virginia Commonwealth University; Richmond Virginia USA
3. Department of Oral Maxillofacial Surgery; Virginia Commonwealth University School of Dentistry; Richmond Virginia USA
4. Private Practice; Palo Alto California USA
5. Advanced Education in General Dentistry; University of Texas at San Antonio Health Science Center School of Dentistry; San Antonio Texas USA