TY - RPRT TI - 2003 JCO Orthodontic Practice Study. Part 1. Trends. AU - Robert G Keim AU - Eugene L Gottlieb AU - Allen H Nelson AU - David S Vogels AU - Journal of Clinical Orthodontics PY - 2003 UR - https://pubmed.ncbi.nlm.nih.gov/14617842/ ID - 14617842 ER -