This apparently ‘unknown’ and ‘uncertified’ source of the Elgazzar data was…. a link provided in the 3rd preprint of Elgazzar’s paper!
Once in your live you could provide us some facts! So where is the link?
No preprint contains a link to data. Usually you have to ask the author. We make the test. You provide the data and I ask the author (not a fake agent) for his data....