| prov:value
| - Angle ?? is, e.g., about 30 degrees, angle ?? is, e.g., about 40 degrees, angle ?? is, e.g., about 30 degrees, and angle ?? is, e.g., about 40 degrees. [0139] Anchors 1012 and 1014 are made from rigid, biocompatible materials, such as polyethylene, an acetal, or polypropylene.
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