%0 Journal Article %T Sample size for clinical trials %A Billings, M %A Lopez Mitnik, G %A Dye, BA %J Oral Diseases %V 23 %N 8 %P 1013-1018 %@ 1354-523X %D 2017-11-01 %I Wiley Subscription Services, Inc., A Wiley Company %~ DeepDyve