[1] King Saud Univ, Coll Appl Med Sci, Dept Dent Hlth, Riyadh, Saudi Arabia
[2] Carl von Ossietzky Univ Oldenburg, Klinikum Oldenburg Univ Hosp, Inst Diagnost & Intervent Radiol, Oldenburg, Germany
[3] Pushpagiri Coll Dent Sci, Dept Periodontol, Thiruvalla, India
[4] Global Inst Publ Hlth, Thiruvananthapuram, Kerala, India
[5] Hamad Med Cooperat, Dept Dent, Oral Hlth Inst, Doha 3050, Qatar