%0 Journal Article %T Sharp bounds on the relative treatment effect for ordinal outcomes %A Lu, Jiannan %A Zhang, Yunshu %A Ding, Peng %J Biometrics %V 76 %N 2 %P 664-669 %@ 0006-341X %D 2020-06-01 %I Wiley Subscription Services, Inc., A Wiley Company %~ DeepDyve