When it is appropriate, we do give referrals of this kind. However, our privacy policy requires that all such referrals are by permission only.
     Unless the circumstances and conditions are very similar, such referrals may not be indicative in the ways many prospective users hope. Whenever it is thought to be really helpful, we do make referrals.
     More than 99 percent of our customers are successful, according to reasonable expectations. But many users will not agree to being contacted and will not accept referrals. Of those who are open to this, a very wide variety of afflictions are being treated. Unless their problem is very similar, such a referral may not be relevant.
     If you want a character reference, or would simply like to speak with a user who has been successful with something other than the exact problem that you are experiencing, obviously, these references are usually plentiful, as you would expect.
     The only restriction that exists on this sort of referral, is that each customer must give specific permission for each referral, and we generally do not refer to the same customer more than a few times, so as not to "wear-out our welcome" in this regard. Small time distributors are the exception.