1. Department of Pathology, Keck School of Medicine University of Southern California Los Angeles California 90033
2. Integrative Stem Cell Center China Medical University Hospital Taichung 40447 Taiwan
3. College of Life Sciences Nankai University Tianjin 300071 China
4. Laboratory of Vertebrate Evolution, College of Life Sciences Capital Normal University Beijing 100048 China
5. Beijing Advanced Innovation Center for Imaging Technology Capital Normal University Beijing 100048 China
6. Beijing Xiachong Amber Museum Beijing 100083 China
7. International Research Center of Wound Repair and Regeneration National Cheng Kung University Tainan 70101 Taiwan
8. Los Angeles County Museum of Natural History Los Angeles California 90007
9. Department of Biomedical Imaging and Radiological Science China Medical University Taichung 40402 Taiwan