1 Alliance for Cardiovascular Diagnostic and Treatment Innovation, Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, USA. Electronic address: shijie.zhou@jhu.edu.
2 Department of Medicine, Dalhousie University, and the Queen Elizabeth II Health Sciences Centre, Halifax, Nova Scotia, Canada.
3 Alliance for Cardiovascular Diagnostic and Treatment Innovation, Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, USA.