Comment on ``New Physics Contributions to the Lifetime Difference in $D^0-{\bar{D}}^0$ mixing''

We find that in the nonmanifest left-right (LR) model, an important LR mixing effect was not considered in the paper by E. Golowich, S. Pakvasa, and A. Petrov, Phys. Rev. Lett. 98, 181801 (2007).