title: Substantially equivalent to what?
authors.forename: H
authors.initials: H
authors.lastname: Alexander
mesh_terms: D001672:Biocompatible Materials / Q000592:standards*; D002986:Clinical Trials as Topic; D006801:Humans; D019736:Prostheses and Implants / Q000592:standards*; D014481:United States; D014486:United States Food and Drug Administration
chemical_list: D001672:Biocompatible Materials