1. Department of OrthopaedicsOtto‐von–Guericke University of MagdeburgMagdeburg Germany
2. Institute of Materials ScienceLeibniz University Hannover, An der Universität 230823Garbsen Germany
3. Jilin Heart HospitalDepartment of Congenital and Pediatric CardiologyChangchun130117 Jilin China