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Article History

Received: 7 November 2019

Revised: 27 March 2020

Accepted: 29 March 2020

First Online: 8 April 2020

Compliance with Ethical Standards

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: Professor Mark Crowther discloses having participated in various medicolegal activities relating to thrombosis, anticoagulant drugs, or other aspects of hematological practice, and that these activities are bound by confidentiality arrangements. Dr Crowther holds the Leo Pharma Chair in Thromboembolism research; the funding for this is held in perpetuity at McMaster University and the interest is used to support Dr Crowther’s research activities. F. Al-Eidan declares that he has no conflict of interest. G. Aljarba declares that she has no conflict of interest. A. Aldakhil declares that she has no conflict of interest. B. Allehyani declares that she has no conflict of interest. M. Yahia declares that she has no conflict of interest. N. Alghtani declares that she has no conflict of interest. A. Alaklabi declares that he has no conflict of interest. A. Alsuhaibani declares that he has no conflict of interest. M. Badri declares that he has no conflict of interest.

: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

: Informed consent was obtained from all individual participants included in the study.