[1] Univ Iowa, Coll Dent & Dent Clin, Dept Orthodont, 801 Newton Rd,219 Dent Sci S, Iowa City, IA 52242 USA
[2] Univ Washington, Sch Dent, Dept Orthodont, Seattle, WA 98195 USA
[3] Univ Oklahoma, Coll Dent, Div Grad Orthodont, Oklahoma City, OK USA
[4] Univ Nevada, Sch Dent Med, Dept Orthodont, Las Vegas, NV 89154 USA
[5] Case Western Reserve Univ, Sch Dent Med, Dept Orthodont, Cleveland, OH USA
[6] Univ Rochester, Sch Med & Dent, Eastman Inst Oral Hlth, Div Orthodont, Rochester, NY USA
[7] Univ Maryland, Sch Dent, Div Orthodont, Baltimore, MD 21201 USA
[8] Indiana Univ, Sch Dent, Dept Orthodont & Oral Facial Genet, Indianapolis, IN USA
[9] Virginia Commonwealth Univ, Sch Dent, Dept Orthodont, Richmond, VA USA