Received: 20 January 2021
Accepted: 28 April 2021
First Online: 7 May 2021
: The study protocol was investigated and approved by the Medical Ethics Research Team, Faculty of Medicine, Mansoura University (code number MS. 18. 11.364). Every case, after guaranteeing privacy, has given informed written consent.
: Not applicable.
: The authors declare that they have no competing interests.