I'm sadly going to have to turn to Jean again to probably answer this, but I'm going to guess that the answer will be no, we didn't have reliable data. It would all have been contained in the same system, following the same mechanisms and processes. If you can't have reliable data on what was there and what those expiry dates are, chances are you don't have it as well on ins and outs.
Jean, would you like to expand on that question?