[1] King Saud Univ, King Khalid Univ Hosp, Dept Pathol, Riyadh, Saudi Arabia
[2] King Saud Univ, Coll Med, Riyadh, Saudi Arabia
[3] King Faisal Specialist Hosp & Res Ctr, Dept Genet, Riyadh, Saudi Arabia
[4] Alfaisal Univ, Dept Anat & Cell Biol, Coll Med, Riyadh, Saudi Arabia