1. State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases and Shaanxi Key Laboratory of Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi’an, Shaanxi 710032, China.
2. Department of Chemical Engineering, Shaanxi Key Laboratory of Energy Chemical Process Intensification, Institute of Polymer Science in Chemical Engineering, School of Chemical Engineering and Technology, Xi’an Jiao Tong University, Xi’an, Shaanxi 710049, China.
3. Department of Paediatric Dentistry, School of Stomatology, China Medical University, Shenyang, Liaoning, 110002 China.