[1] Obafemi Awolowo Univ, Dept Child Dent Hlth, Ife, Nigeria
[2] Alexandria Univ, Alexandria, Egypt
[3] Univ Bergen, Dept Clin Dent, Bergen, Norway
[4] Univ Luterana Brasil, Dept Pediat Dent, Canoas, Brazil
[5] Queen Mary Univ London, Barts & London Sch Med & Dent, Ctr Oral Bioengn, Mile End Rd, London E1 4NS, England
[6] Alexandria Univ, Fac Dent, Dept Conservat Dent, Alexandria, Egypt
[7] Univ Nairobi, Dept Paediat Dent & Orthodont, Nairobi, Kenya
[8] San Martin Porres Univ, Dept Pediat Dent, Lima, Peru
[9] Jordan Univ Sci & Technol, Dept Prevent Dent, Fac Dent, Irbid, Jordan
[10] Univ Gadjah Mada Yogyakarta, Fac Dent, Prevent & Community Dent Dept, Yogyakarta, Indonesia
[11] Imam Abdulrahman Bin Faisal Univ, Coll Dent, Prevent Dent Sci Dept, Dammam, Saudi Arabia
[12] Univ Tehran Med Sci, Sch Dent, Dept Community Oral Hlth, Tehran, Iran
[13] Univ Benghazi, Dept Community & Prevent Dent, Benghazi, Libya
[14] Dubai Hlth Author, Dubai, U Arab Emirates
[15] Univ Belgrade, Sch Dent Med, Dept Pediat & Prevent Dent, Belgrade, Serbia
[16] Univ Manitoba, Dr Gerald Niznick Coll Dent, Dept Prevent Dent Sci, Winnipeg, MB, Canada
[17] Univ Manitoba, Rady Fac Hlth Sci, Max Rady Coll Med, Dept Pediat & Child Hlth, Winnipeg, MB, Canada
[18] Univ Manitoba, Rady Fac Hlth Sci, Max Rady Coll Med, Dept Community Hlth, Winnipeg, MB, Canada