[1] WHO Focus Grp AI Hlth, ITU, Top Grp Dent Diagnost & Digital Dent, Berlin, Germany
[2] Boston Univ, Med Ctr, Dept Med, Sect Endocrinol Nutr & Diabet,Vitamin D, Boston, MA USA
[3] Virginia Commonwealth Univ, Philips Inst Oral Hlth Res, Coll Engn, Sch Dent,Dept Oral & Craniofacial Mol Biol, Richmond, VA 23298 USA
[4] Virginia Commonwealth Univ, Coll Engn, Dept Biomed Engn, Richmond, VA 23298 USA
[5] Charite Univ Med Berlin, Dept Oral Diagnost Digital Hlth & Hlth Serv Res, Assmannshauser Str 4-6, D-14197 Berlin, Germany