Received: 14 January 2021
Accepted: 18 May 2021
First Online: 31 May 2021
: All patients signed informed consent. The study was carried out following the Helsinki Declaration, and was approved by the ethical committee of endemic medicine department, Kasr Alainy Hospital, Cairo University, as a master thesis; hence, it did not have an ethics committee’s reference number.
: Patients had signed informed consent for use of their data in research and publication without the appearance of their names.
: No competing interests