Correction: Evaluating the Accuracy of Diffusion MRI Models in White Matter

There is an error in Equation 3. Please see the correct Equation 3 here.

$$\text{S}\left(\mathrm{\theta },\text{b}\right)={\text{ β}}_o{e}^{-bD}+{\displaystyle \sum }_{i=1}^F{\beta }_i{e}^{-b{\theta }^t{Q}_i\theta }$$