People stand behind a 3D printed model for medical purposes at the stand of the US company Stratasys during the international fairs FabCon 3.D and Rapid.Tech at Messe Erfurt in Erfurt, Germany, Tuesday, June 14, 2016. Exhibitors from all over the world present the latest products and applications in the fields of additive manufacturing and 3D printing until June 16, 2016. (Photo by Jens Meyer/AP Photo)
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