Fig. 1.

Author’s search of PubMed using search terms: (“3D Printing” OR “3-dimensional printing” OR “3D printed” OR “additive manufacturing” OR “rapid prototyping”) AND (“Medicine”) on November 7th 2019-PubMed maintained by the National Center for Biotechnology Information (NCBI), at the U.S. National Library of Medicine (NLM), located at the National Institutes of Health (NIH). Dashed line represents 5th order polynomial equation fitted to data (R² = 0.98)