1. School of Mechanics and Safety Engineering Zhengzhou University Zhengzhou China
2. Division of Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital Harvard Medical School Cambridge Massachusetts USA
3. National Center for International Joint Research of Micro‐Nano Molding Technology Zhengzhou University Zhengzhou China
4. Key Laboratory for Micro Molding Technology of Henan Province Zhengzhou University Zhengzhou China
5. School of Mechanical Engineering Hangzhou Dianzi University Hangzhou China
6. Obstetrics and Gynecology Hospital Fudan University Shanghai China