Department of Surgery;
the Second Affiliated Hospital;
School of Medicine;
Zhejiang University;
Hangzhou 310009;
China;
Tissue Engineering Laboratory;
Department of Rheumatology and Clinical Immunology;
Charitd-University Medicine;
Berlin 10117;
Germany;
Department of Otorhinolaryngology;
Charitd-University Medicine;
Berlin 10117;
Germany;