[1] Jonkoping Univ, Ctr Oral Hlth, Sch Hlth Sci, Jonkoping, Sweden
[2] Jonkoping Univ, SIDR, Child Res Grp, Jonkoping, Sweden
[3] Natl Oral Disabil Ctr Rare Disorders, Inst Postgrad Dent Educ, Jonkoping, Sweden
[4] Univ N Carolina, Sch Nursing, Chapel Hill, NC 27515 USA
[5] Univ Groningen, Univ Med Ctr, Ctr Dent & Oral Hyg, Groningen, Netherlands
[6] Univ Ghent, Dept Special Care Dent, Oral Hlth Sci, Ghent, Belgium
[7] Jonkoping Univ, Sch Hlth Sci, Dept Nursing Sci, Jonkoping, Sweden