Therapy choices for adult stutter, MPI, Kassel, or Speechagain

Therapy choices for adult stutter, MPI, Kassel, or Speechagain Hi, Fellows: I recently read some book and science papers on brain electrical scanning/imaging for stutters. Many of these studies found abnormal structure and function. I am not sure whether it cause stuttering or the result of stuttering. Many studies also find high plasticity in adult brains after treatment, some of which are: Kassel (freach, though seems not available in US): [https://www.kasseler-stottertherapie.de/standorte/international-stuttering-therapy/](https://www.kasseler-stottertherapie.de/standorte/international-stuttering-therapy/) MPI (modified phonation interval) [https://www.mpi2.com/](https://www.mpi2.com/) and Speechagain [https://speechagain.com/](https://speechagain.com/) ​ Do any fellows here used these methods and are willing to share your thoughts here?