I have no preference, I just say that this calcium-adjusted neurophosphatase inhibitor is very mature medicine, used for a long time, including cyclosporine and his kemos are very mature, since there are mature drugs should be head-to-head with mature drugs, can not only do effectiveness, if this drug has never been, there is no equivalent product out, should do drug effectiveness testing, it is effective. Second, if the drug is mature, you just have a new replacement product in this structure, and you should do a head-to-head experiment.
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