[1] NYU, Coll Dent, Dept Epidemiol & Hlth Promot, New York, NY USA
[2] NYU, Coll Dent, WHO Collaborating Ctr Qual Improvement & Evidence, New York, NY USA
[3] Stellenbosch Univ, Stellenbosch Inst Adv Studies, Stellenbosch, South Africa
[4] Univ Western Cape, WHO Collaborating Ctr Oral Hlth, Cape Town, South Africa
[5] Univ Western Cape, Dept Community Dent, Cape Town, South Africa
[6] Univ North Carolina, Gillings Sch Global Publ Hlth, Dept Nutr, Chapel Hill, NC USA
[7] Univ North Carolina, Carolina Populat Ctr, Chapel Hill, NC USA