?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Pham&rft.aufirst=Tra+My&rft.au=Pham%2C+Tra+My&rft.atitle=Missing+data%2C+part+3.+How+to+explore+missing+data&rft.volume=162&rft.date=3+August+2022&rft.issue=2&rft.title=American+Journal+of+Orthodontics+and+Dentofacial+Orthopedics&rft.pages=282-283&rft.genre=article