1. Departments of Periodontology and Oral Molecular Biology, Oregon Health Sciences University, 611 SW Campus Drive, Portland, OR 97201-3097
2. Department of Periodontology and Medical Biochemistry, The Ohio State University Health Sciences Center, Columbus, OH 43210
3. Department of Biochemistry, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78284