Received: 28 September 2019
Accepted: 10 February 2020
First Online: 11 May 2020
Ethics approval and consent to participate
: The institutional review board of Lady Davis Carmel Medical Center waived the need for approval of this study. Hospitalized patients before coronary angiography were asked to participate.
: All authors reviewed the manuscript and consented to its publication.
: The authors declare that they have no competing interests.