[1] King Saud Univ, Coll Dent, Dept Oral & Maxillofacial Surg, Riyadh 11433, Saudi Arabia
[2] King Saud Univ, Fac Dent, Dept Oral & Maxillofacial Surg, POB 60169, Riyadh 11545, Saudi Arabia
[3] King Saud Univ, King Khalid Univ Hosp, Coll Med, Dept Anesthesiol, Riyadh 11433, Saudi Arabia
[4] Natl Guard Hlth Affairs, Maxillofacial Surg, Riyadh, Saudi Arabia