1 Department of Electrical and Computer Engineering, University of Illinois Chicago, Chicago, IL, USA.
2 Department of Orthodontics (M/C 841), College of Dentistry, University of Illinois Chicago, 801 S. Paulina Street, RM 131, Chicago, IL, 60612-7211, USA.
3 Department of Orthodontics (M/C 841), College of Dentistry, University of Illinois Chicago, 801 S. Paulina Street, RM 131, Chicago, IL, 60612-7211, USA. [email protected].