Neurofeedback in the Treatment of Trauma is currently the 13th most popular neurology book on Amazon.

http://www.amazon.com/gp/bestsellers/books/689749011/ref=pd_zg_hrsr_b_1_6_last

It’s also ranked #21 in medical counseling books

http://www.amazon.com/gp/bestsellers/books/6511984011/ref=pd_zg_hrsr_b_2_4_last

And #33 in popular psychology counseling books:

http://www.amazon.com/gp/bestsellers/books/11149/ref=pd_zg_hrsr_b_3_4_last