科研之友
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摘要
This manuscript is intended to give one an international perspective on the use of fillers around the world-what makes some of them special and what is the need and what is the purpose of having so many fillers in this global dermatologic community we live in. In the US, we have a finite number of fillers and only a handful more currently going through FDA testing. We demand much from our fillers in terms of safety and efficacy, and for all of us in the US, this is a very good reason to keep the numbers of fillers available to a reasonable number.
