Received: 2 July 2019
Accepted: 19 January 2020
First Online: 29 January 2020
Ethics approval and consent to participate
: The study protocol was approved by the University of Baghdad, College of Medicine, Rheumatology and Medical Rehabilitation Unit in accordance with the Declaration of Helsinki with ethical approval reference no.: 2017070-EA-7189.Before becoming involved in the study, all participants who agreed to be involved in the study were given a cover letter describing the study objectives as well as a written informed consent form.
: Not applicable.
: The authors declare that they have no competing interests.