Affiliation: | aPhD Student, Department of Orthodontics, University of Rome Tor Vergata, Rome, Italy. ; bPostgraduate Student, Department of Orthodontics, University of Rome Tor Vergata, Rome, Italy. ; cStatistician, Edinburgh Clinical Trials Unit (ECTU), University of Edinburgh, Edinburgh, United Kingdom. ; dProfessor and Department Chair, Department of Orthodontics, University of Rome Tor Vergata, Rome, Italy. |