[1] Univ Pittsburgh, Sch Med, Dept Orthopaed Surg, 3471 Fifth Ave,Suite 911, Pittsburgh, PA 15213 USA
[2] Thammasat Univ, Dept Orthopaed, Fac Med, Pathum Thani, Thailand
[3] Hannover Med Sch, Dept Orthoped Surg, Hannover, Germany
[4] Orthoped Foot & Ankle Ctr, Westerville, OH USA
[5] Danube Univ Krems, Ctr Regenerat Med & Orthoped, Krems An Der Donau, Austria
[6] St Vincents Clin, Sydney, NSW, Australia
[7] Swiss Med Network, Schmerzklin Basel, Swiss Ortho Ctr, Orthopaed Dept, Basel, Switzerland
[8] Schon Klin Munchen Harlaching, Ctr Foot & Ankle Surg, Munich, Germany
[9] Southern Calif Orthoped Inst, Los Angeles, CA USA