1. Center for Bioelectronics, Biosensors and Biochips (C3B)Department of Biomedical EngineeringTexas A&M University College Station TX 77843 USA
2. Analog Mixed-Signal CenterDepartment of Electrical and Computer EngineeringTexas A&M University College Station TX 77843 USA
3. Department of Electrical and Computer EngineeringTexas A&M University College Station TX 77843 USA
4. Department of Cardiovascular SciencesHouston Methodist Research Institute 6670 Bertner Ave. Houston TX 77030 USA
5. Research and Development DepartmentABTECH Scientific, Inc. Biotechnology Research Park, 800 East Leigh Street Richmond VA 23219 USA