1. Department of Mechanical and Aerospace Engineering, North Carolina State University, USA
2. Department of Biomedical Engineering, Duke University, USA
3. Graduate Program in Acoustics and Department of Biomedical Engineering, Pennsylvania State University, USA
4. Department of Biomedical Engineering, Duke University, Durham, NC, USA
5. Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC, USA