1. Center for Stem Cell and Tissue Engineering; School of Medicine; Zhejiang University; Hangzhou P. R. China
2. Zhejiang Provincial Key Laboratory of Tissue Engineering and Regenerative Medicine; Hangzhou P. R. China
3. Division of hematology and oncology; Shenzhen Children's Hospital; Shenzhen P. R. China
4. Department of Biosystems Science & Engineering; ETH-Zurich; Mattenstrasse 26 Basel Switzerland
5. The State Key Lab of Fluid Power Transmission and Control; School of Mechanical Engineering; Zhejiang University; Hangzhou P. R. China