The mission takes place at Tokuda Hospital in Sofia, Bulgaria. Sofia is the capital and largest city in Bulgaria, located at the foot of Mount Vitosha. Drs. Steve Mardjetko (Chicago, IL) and Francisco Sanchez-Perez-Grueso (Madrid, Spain) began mission in November 2008 with host surgeon Vasil Yabolonsk (Chief of Orthopedic Surgery). The program is sponsored in large part by a generous donation from from Osteotech. The week-long mission takes place every spring and winter.