BELGRADE, Mont., June 16, 2016 (GLOBE NEWSWIRE) — Xtant Medical Holdings, Inc. (NYSE MKT:XTNT), a leader in the development of regenerative medicine products and medical devices, today announced the appointment of Paul Buckman, Eric Timko, and Rudy Mazzocchi to its Board of Directors.  The Company also announced the resignation of Directors Jon Wickwire and David […]