Pingsu has a secret: sometimes his body shakes and he feels a little dizzy. His friends are curious, so Pingsu bravely explains that he has epilepsy. When he shares his condition with his friends, ...

State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China Article Views are the COUNTER-compliant sum of full text article downloads since ...

‡ Key Laboratory for Biomechanics and Mechanobiology of the Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China § Department of ...