Article History
Received: 26 April 2019
Accepted: 20 May 2019
First Online: 29 May 2019
Ethics approval and consent to participate
: The study protocol was reviewed and approved by the Ethics Committee of the Faculty of Medicine, Alexandria University, Egypt (Serial No. 0304310). In addition, written informed consent was signed or thumb-printed by the HD patients and apparently healthy individuals after explaining them the purpose of the study.
: Not applicable.
: The authors declare that they have no competing interests.