Support group for IBS in kids

I'm looking for support groups for kids with IBS or chronic constipation. My 9-yr-old would really like to know some other kids with these issues. Can be online or in the Twin Cities. I'm having trouble finding anything for kids by searching online.

It would also be really helpful to find a counselor that regularly sees kids with GI issues, again either in the Twin Cities or online.

Cross-posted in the Kids and Teens group. Thanks!