[1] Hosp Special Surg, Dept Orthoped Surg Adult Reconstruct & Joint Repla, New York, NY USA
[2] Corin Grp, Cirencester, Glos, England
[3] Centura Hlth Phys Grp, Colorado Joint Replacement, Denver, CO USA
[4] Stanford Univ, Med Ctr, Dept Orthopaed Surg, Palo Alto, CA USA
[5] Hosp Special Surg, 535 E 70th St, New York, NY 10021 USA