[1] Obafemi Awolowo Univ, Dept Child Dent Hlth, Ife, Osun State, Nigeria
[2] Alexandria Univ, Fac Dent, Dept Pediat Dent & Dent Publ Hlth, Alexandria, Egypt
[3] Univ Belgrade, Dept Pediat & Prevent Dent, Sch Dent Med, Belgrade, Serbia
[4] Univ Manitoba, Rady Fac Hlth Sci, Dept Prevent Dent Sci, Dr Gerald Niznick Coll Dent, Winnipeg, MB, Canada
[5] Obafemi Awolowo Univ Teaching Hosp Complex, Dept Child Dent Hlth, Ife, Osun State, Nigeria
[6] Univ Tehran Med Sci, Res Ctr Caries Prevent, Dent Res Inst, Tehran, Iran
[7] Univ Tehran Med Sci, Sch Dent, Dept Community Oral Hlth, Tehran, Iran
[8] Jordan Univ Sci & Technol, Prevent Dent Dept, Irbid 22110, Jordan
[9] Univ Benghazi, Fac Dent, Dept Community & Prevent Dent, Benghazi, Libya
[10] Univ Gadjah Mada Yogyakarta, Fac Dent, Prevent & Community Dent Dept, Yogyakarta, Indonesia
[11] Imam Abdulrahman bin Faisal Univ, Coll Dent, Dept Prevent Dent Sci, Dammam, Saudi Arabia
[12] Univ Nigeria, Dept Child Dent Hlth, Enugu, Enugu State, Nigeria
[13] Dubai Hlth Author, Dent Serv Dept, Dubai, U Arab Emirates
[14] Univ Nairobi, Dept Paediat Dent & Orthodont, Nairobi, Kenya
[15] Univ Cent Venezuela, Pediat Dent & Orthodont Dept, Caracas, Venezuela