[1] Charite Univ Med Berlin, Dept Orthodont & Dentofacial Orthoped, Assmannshauser Str 4-6, D-14197 Berlin, Germany
[2] Free Univ Berlin, Assmannshauser Str 4-6, D-14197 Berlin, Germany
[3] Humboldt Univ, Inst Oral Hlth Sci, Assmannshauser Str 4-6, D-14197 Berlin, Germany
[4] Univ Bern, Med Fac, Dent Sch, Dept Orthodont & Dentofacial Orthoped, Freiburgstr 7, CH-3010 Bern, Switzerland
[5] Carl Thiem Klinikum Cottbus, Dept Pediat & Adolescent Med, Thiemstr 111, D-03048 Cottbus, Germany
[6] Univ Leipzig, Hosp Children & Adolescents, Ctr Pediat Res Leipzig, Dept Women & Child Hlth, Liebigstr 20a,Haus 6, D-04103 Leipzig, Germany
[7] Charite Univ Med Berlin, Interdisciplinary Metab Ctr, Augustenburger Pl 1, D-13353 Berlin, Germany
[8] Free Univ Berlin, Augustenburger Pl 1, D-13353 Berlin, Germany
[9] Humboldt Univ, Augustenburger Pl 1, D-13353 Berlin, Germany
[10] Campus Virchow Klinikum, Augustenburger Pl 1, D-13353 Berlin, Germany
[11] Tech Univ Dresden, Dept Orthodont, Fetscherstr 74, D-01307 Dresden, Germany