1. Division of Basic Biomedical Sciences and Center for Brain and Behavior Research; Sanford School of Medicine; University of South Dakota; Vermillion South Dakota USA
2. Guanghua School of Stomatology; Guangdong Provincial Key Laboratory of Stomatology and Institute of Stomatological Research; Hospital of Stomatology; Sun Yat-sen University; Guangzhou Guangdong China
3. Department of Oral Immunology and Infectious Diseases; School of Dentistry; University of Louisville; Louisville Kentucky USA