1. Department of Anatomy and Cell Biology, Rush University Medical Center, Chicago, IL, USA
2. Department of Pathophysiology, Anhui Medical University, Hefei, China
3. Institute of Oral Health Research, University of Alabama at Birmingham, Birmingham, AL, USA
4. Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
5. Howard Hughes Medical Institute, Baylor College of Medicine, Houston, TX, USA
6. The Student Inquiry and Research (SIR) Program, Illinois Mathematics and Science Academy, Aurora, IL, USA