¹Department of Neuroscience, University of Pennsylvania-School of Medicine, ²Department of Physiology, University of Pennsylvania-School of Medicine

¹Department of Bioengineering, Lehigh University, ²Department of Materials Science and Engineering, Lehigh University, ³Department of Chemistry, Lehigh University, ⁴Department of Mechanical Engineering and Mechanics, Lehigh University

¹Department of Applied Chemistry, School of Applied Science, National Defense Academy of Japan, ²Department of Applied Physics, School of Applied Science, National Defense Academy of Japan, ³Department of Materials Science and Technology, Faculty of Engineering, Niigata University

¹Program in Developmental Biology, Children's Memorial Research Center, ²Department of Pediatrics, Northwestern University