Media type: E-Article Title: A 20-year cohort study of health gain from orthodontic treatment: Psychological outcome Contributor: Shaw, William C.; Richmond, Stephen; Kenealy, Pamela M.; Kingdon, Anne; Worthington, Helen Published: Elsevier BV, 2007 Published in: American Journal of Orthodontics and Dentofacial Orthopedics, 132 (2007) 2, Seite 146-157 Language: English DOI: 10.1016/j.ajodo.2007.04.009 ISSN: 0889-5406 Origination: Footnote: