there is a subset for whatever reason and it probably is related more to dissolution rates. It is my guess that we probably don't need a lot more complicated studies. I think that in fact you could probably do much simpler studies if all of the products, in fact, had dissolution standards in which everything was dissolved within 20 minutes. The transit time would not be a problem.
What I think that we will see is that as long as we have two sets of standards ‑‑ and at one time, the USP proposed that they were going to have two sets of standards, one for one set of compounds and one for another set of compounds ‑‑ if that's true, we will always have problems of interchange. I believe that whenever you look at today's market, which unfortunately, good or bad ‑‑ and I'm not sure it's good ‑‑ allows widespread interchange, that this will be a continuing problem. I think that probably we need to address the problem in a more complete way and look at all of the factors that may be involved, including transit times, including dissolution.
DR. KIBBE: Thank you, Bill.