Before revision:  Subsequent work has focused on either extending this setting to when each data point has multiple, non-disjoint sensitive types such as race and gender  , or to address the problem that the clustering algorithms in the above work do not scale well.
After revision:  Subsequent work has focused on either extending this setting to when each data point has multiple, non-disjoint sensitive types such as race and gender 6 , or to address the problem that the clustering algorithms in the above work do not scale well.