The Journal of bone and joint surgery. American volume, Vol. 87, No. 9. (September 2005), pp. 1978-1984.
Annals of surgery, Vol. 238, No. 2. (August 2003), pp. 161-167.
Health Aff (Millwood), Vol. Suppl Web Exclusive (2004), pp. VAR81-9.
J Bone Joint Surg Am, Vol. 81, No. 6. (June 1999), pp. 763-772.
J Bone Joint Surg Am, Vol. 81, No. 6. (June 1999), pp. 763-772.
Health Aff (Millwood), Vol. Suppl Web Exclusives (2004)
British Journal of Surgery, Vol. 74, No. 10. (1987), pp. 884-889.
Med Care, Vol. 30, No. 6. (June 1992), pp. 484-502.
Z Orthop Ihre Grenzgeb, Vol. 141, No. 3. (n 2003), pp. 261-271.
J Clin Epidemiol, Vol. 56, No. 6. (Jun 2003), pp. 515-9.
Aust N Z J Surg, Vol. 63, No. 1. (Jan 1993), pp. 14-9.
Arch Surg, Vol. 135, No. 4. (Apr 2000), pp. 457-62.
Journal of Bone & Joint Surgery - American Volume., Vol. 72, No. 9. (1990), pp. 1286-93.
J Health Serv Res Policy, Vol. 2, No. 3. (Jul 1997), pp. 137-43.
BMC Health Serv Res, Vol. 4, No. 1. (Jan FebruaryFebruary 2004)
Int J Technol Assess Health Care, Vol. 11, No. 4. (Fall 1995), pp. 733-40.
New England Journal of Medicine., Vol. 331, No. 15. (1994), pp. 989-95.
Med Care, Vol. 31, No. 8. (Aug 1993), pp. 711-8.
Medical Care., Vol. 30, No. 6. (1992), pp. 484-502.
Stat Med, Vol. 22, No. 18. (Sep March0 2003), pp. 2943-61.