[1] Asia Univ, Trend Res Ctr, Taichung, Taiwan
[2] Thamar Univ, Fac Dent, Dept Oral & Maxillofacial Surg, Thamar, Yemen
[3] Karolinska Inst, Dept Dent Med, Div Oral Diagnost & Rehabil, Huddinge, Sweden
[4] Swedish Red Cross Univ, Inst Hlth Sci, Huddinge, Sweden
[5] Karolinska Inst, Dept Neurobiol Care Sci & Soc, Huddinge, Sweden
[6] Karolinska Inst, Dept Dent Med, SE-14104 Huddinge, Sweden