Corrections to Transparent Parametrizations for Potential Outcomes
by Richardson, Evans and Robins (2011)
page 578.
In the numerator for the bounds on ACDE_NT(x_0) z_0 should replace z_1 and z_1 should replace z_0.
page 578
In equation (8) the counterfactuals Y_{x} should be Y_{x,z} and for z=0,1 should be added.
[The independences Z _||_ Y_{x,z} do not follow from Z _||_ Y_{x} and (7).]
page 580
line 19: Z_x should be X_z.