[1] Fiji Natl Univ, Coll Med Nursing & Hlth Sci, Sch Dent & Oral Hlth, Suva, Fiji
[2] Minist Hlth, Pangai, Tonga
[3] Dept Hlth, Alofi, Niue
[4] NYU, Coll Dent, WHO Collaborating Ctr Qual Improvement & Evidence, Dept Epidemiol & Hlth Promot, New York, NY 10010 USA