title: Tissue fillers.
authors.forename: Arnold William
authors.initials: AW
authors.lastname: Klein
mesh_terms: D001672:Biocompatible Materials; D003094:Collagen; D017277:Drug Approval; D006801:Humans; D015595:Skin Aging; D017768:Skin, Artificial; D014481:United States; D014486:United States Food and Drug Administration
chemical_list: D001672:Biocompatible Materials; D003094:Collagen