Received: 15 June 2020
Accepted: 17 August 2020
First Online: 17 September 2020
Ethics approval and consent to participate
: The procedures followed were in accord with the ethical standards of the committee on human experimentation at our institution. Written and informed consent was obtained for all subjects, and the study was approved by the Research Ethics Board of Health Sciences North.
: Consent to publish data was obtained for all subjects.
: JSK, JE, AE, and MP are working with Flosonics, a start-up developing a commercial version of the Doppler patch. IB has received grants and consulting fees for GE Healthcare. DCM reports not conflicts.