Early Allograft Dysfunction Is Associated With Excess Resource Utilization After Liver Transplantation
被引:30
作者:
Croome, K. P.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, Canada
Univ Western Ontario, Dept Surg, London, ON N6A 5A5, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, Canada
Croome, K. P.
[1
,2
]
Hernandez-Alejandro, R.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, Canada
Univ Western Ontario, Dept Surg, London, ON N6A 5A5, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, Canada
Hernandez-Alejandro, R.
[1
,2
]
Chandok, N.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, Canada
Univ Western Ontario, Dept Med, London, ON N6A 5A5, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, Canada
Chandok, N.
[1
,3
]
机构:
[1] Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, Canada
[2] Univ Western Ontario, Dept Surg, London, ON N6A 5A5, Canada
[3] Univ Western Ontario, Dept Med, London, ON N6A 5A5, Canada
Background. There are limited data on length of stay (LOS) following liver transplantation (LT), yet this is an important health services metric that directly correlates with early post-LT health care costs. The primary objective of this study was to examine the relationship between early allograft dysfunction (EAD) and LOS after LT. The secondary objective was to identify additional recipient, donor, and operative factors associated with LOS. Methods. Adult patients undergoing primary LT over a 32-month period were prospectively examined at a single center. Subjects fulfilling standard criteria for EAD were compared with those not meeting the definition. Variables associated with increased LOS on ordinal logistic regression were identified. Results. Subjects with EAD had longer mean hospital LOS than those without (42.5 +/- 38.9 days vs 27.4 +/- 31 days; P = .003). Subjects with BAD also had longer mean intensive care LOS (8.61 +/- 10.28 days vs 5.45 +/- 11.6 days; P = .048). Additional factors significantly associated with LOS included Model for End-Stage Liver Disease (MELD) score, recipient location before LT, and postoperative surgical complications. Conclusions. BAD is associated with longer hospitalization after LT. MELD score, preoperative recipient location, and postoperative complications were significantly associated with LOS. From a cost-containment perspective, these findings have implications on resource allocation.
机构:
St Louis Univ, Sch Med, Ctr Outcomes Res, St Louis, MO USAUniv Washington, Dept Surg, Div Transplant Surg, Seattle, WA 98195 USA
Buchanan, Paula
;
Dzebisashvili, Nino
论文数: 0引用数: 0
h-index: 0
机构:
St Louis Univ, Sch Med, Ctr Outcomes Res, St Louis, MO USAUniv Washington, Dept Surg, Div Transplant Surg, Seattle, WA 98195 USA
Dzebisashvili, Nino
;
Lentine, Krista L.
论文数: 0引用数: 0
h-index: 0
机构:
St Louis Univ, Sch Med, Ctr Outcomes Res, St Louis, MO USAUniv Washington, Dept Surg, Div Transplant Surg, Seattle, WA 98195 USA
Lentine, Krista L.
;
Axelrod, David A.
论文数: 0引用数: 0
h-index: 0
机构:
St Louis Univ, Sch Med, Ctr Outcomes Res, St Louis, MO USA
Dartmouth Hitchcock Med Ctr, Dept Surg, Hanover, NH USAUniv Washington, Dept Surg, Div Transplant Surg, Seattle, WA 98195 USA
Axelrod, David A.
;
Schnitzler, Mark A.
论文数: 0引用数: 0
h-index: 0
机构:
St Louis Univ, Sch Med, Ctr Outcomes Res, St Louis, MO USAUniv Washington, Dept Surg, Div Transplant Surg, Seattle, WA 98195 USA
Schnitzler, Mark A.
;
Salvalaggio, Paolo R.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Washington, Dept Surg, Div Transplant Surg, Seattle, WA 98195 USA
St Louis Univ, Sch Med, Ctr Outcomes Res, St Louis, MO USAUniv Washington, Dept Surg, Div Transplant Surg, Seattle, WA 98195 USA
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, Canada
Croome, K. P.
;
Marotta, P.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, Canada
Marotta, P.
;
Wall, W. J.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Dept Surg, Div Gen Surg, London, ON N6A 5A5, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, Canada
Wall, W. J.
;
Dale, C.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, Canada
Dale, C.
;
Levstik, M. A.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, Canada
Levstik, M. A.
;
Chandok, N.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, Canada
Chandok, N.
;
Hernandez-Alejandro, R.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, Canada
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
Univ Western Ontario, Dept Surg, Div Gen Surg, London, ON N6A 3K7, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
Croome, Kris P.
;
Wall, William
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
Univ Western Ontario, Dept Surg, Div Gen Surg, London, ON N6A 3K7, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
Wall, William
;
Quan, Douglas
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
Univ Western Ontario, Dept Surg, Div Gen Surg, London, ON N6A 3K7, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
Quan, Douglas
;
Vangala, Sai
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
Vangala, Sai
;
McAlister, Vivian
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
Univ Western Ontario, Dept Surg, Div Gen Surg, London, ON N6A 3K7, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
McAlister, Vivian
;
Marotta, Paul
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
Univ Western Ontario, Div Gastroenterol, London, ON, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
Marotta, Paul
;
Hernandez-Alejandro, Roberto
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
Univ Western Ontario, Dept Surg, Div Gen Surg, London, ON N6A 3K7, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
机构:
Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USAUniv Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
Feng, S
;
Goodrich, NP
论文数: 0引用数: 0
h-index: 0
机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
Goodrich, NP
;
Bragg-Gresham, JL
论文数: 0引用数: 0
h-index: 0
机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
Bragg-Gresham, JL
;
Dykstra, DM
论文数: 0引用数: 0
h-index: 0
机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
Dykstra, DM
;
Punch, JD
论文数: 0引用数: 0
h-index: 0
机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
Punch, JD
;
DebRoy, MA
论文数: 0引用数: 0
h-index: 0
机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
DebRoy, MA
;
Greenstein, SM
论文数: 0引用数: 0
h-index: 0
机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
Greenstein, SM
;
Merion, RM
论文数: 0引用数: 0
h-index: 0
机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
机构:
Univ Penn, Sch Med, Div Transplantat, Penn Transplant Inst,Dept Surg, Philadelphia, PA 19104 USAUniv Penn, Sch Med, Div Transplantat, Penn Transplant Inst,Dept Surg, Philadelphia, PA 19104 USA
Olthoff, Kim M.
;
Kulik, Laura
论文数: 0引用数: 0
h-index: 0
机构:
Northwestern Univ, Dept Med, Chicago, IL 60611 USAUniv Penn, Sch Med, Div Transplantat, Penn Transplant Inst,Dept Surg, Philadelphia, PA 19104 USA
Kulik, Laura
;
Samstein, Benjamin
论文数: 0引用数: 0
h-index: 0
机构:
Columbia Univ, Dept Surg, New York, NY USAUniv Penn, Sch Med, Div Transplantat, Penn Transplant Inst,Dept Surg, Philadelphia, PA 19104 USA
Samstein, Benjamin
;
Kaminski, Mary
论文数: 0引用数: 0
h-index: 0
机构:Univ Penn, Sch Med, Div Transplantat, Penn Transplant Inst,Dept Surg, Philadelphia, PA 19104 USA
Kaminski, Mary
;
Abecassis, Michael
论文数: 0引用数: 0
h-index: 0
机构:
Northwestern Univ, Dept Surg, Chicago, IL 60611 USAUniv Penn, Sch Med, Div Transplantat, Penn Transplant Inst,Dept Surg, Philadelphia, PA 19104 USA
Abecassis, Michael
;
Emond, Jean
论文数: 0引用数: 0
h-index: 0
机构:
Columbia Univ, Dept Surg, New York, NY USAUniv Penn, Sch Med, Div Transplantat, Penn Transplant Inst,Dept Surg, Philadelphia, PA 19104 USA
Emond, Jean
;
Shaked, Abraham
论文数: 0引用数: 0
h-index: 0
机构:Univ Penn, Sch Med, Div Transplantat, Penn Transplant Inst,Dept Surg, Philadelphia, PA 19104 USA
Shaked, Abraham
;
Christie, Jason D.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Penn, Dept Med, Philadelphia, PA 19104 USA
Univ Penn, Dept Epidemiol, Philadelphia, PA 19104 USAUniv Penn, Sch Med, Div Transplantat, Penn Transplant Inst,Dept Surg, Philadelphia, PA 19104 USA
机构:
St Louis Univ, Sch Med, Ctr Outcomes Res, St Louis, MO USAUniv Washington, Dept Surg, Div Transplant Surg, Seattle, WA 98195 USA
Buchanan, Paula
;
Dzebisashvili, Nino
论文数: 0引用数: 0
h-index: 0
机构:
St Louis Univ, Sch Med, Ctr Outcomes Res, St Louis, MO USAUniv Washington, Dept Surg, Div Transplant Surg, Seattle, WA 98195 USA
Dzebisashvili, Nino
;
Lentine, Krista L.
论文数: 0引用数: 0
h-index: 0
机构:
St Louis Univ, Sch Med, Ctr Outcomes Res, St Louis, MO USAUniv Washington, Dept Surg, Div Transplant Surg, Seattle, WA 98195 USA
Lentine, Krista L.
;
Axelrod, David A.
论文数: 0引用数: 0
h-index: 0
机构:
St Louis Univ, Sch Med, Ctr Outcomes Res, St Louis, MO USA
Dartmouth Hitchcock Med Ctr, Dept Surg, Hanover, NH USAUniv Washington, Dept Surg, Div Transplant Surg, Seattle, WA 98195 USA
Axelrod, David A.
;
Schnitzler, Mark A.
论文数: 0引用数: 0
h-index: 0
机构:
St Louis Univ, Sch Med, Ctr Outcomes Res, St Louis, MO USAUniv Washington, Dept Surg, Div Transplant Surg, Seattle, WA 98195 USA
Schnitzler, Mark A.
;
Salvalaggio, Paolo R.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Washington, Dept Surg, Div Transplant Surg, Seattle, WA 98195 USA
St Louis Univ, Sch Med, Ctr Outcomes Res, St Louis, MO USAUniv Washington, Dept Surg, Div Transplant Surg, Seattle, WA 98195 USA
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, Canada
Croome, K. P.
;
Marotta, P.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, Canada
Marotta, P.
;
Wall, W. J.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Dept Surg, Div Gen Surg, London, ON N6A 5A5, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, Canada
Wall, W. J.
;
Dale, C.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, Canada
Dale, C.
;
Levstik, M. A.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, Canada
Levstik, M. A.
;
Chandok, N.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, Canada
Chandok, N.
;
Hernandez-Alejandro, R.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON N6A 5A5, Canada
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
Univ Western Ontario, Dept Surg, Div Gen Surg, London, ON N6A 3K7, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
Croome, Kris P.
;
Wall, William
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
Univ Western Ontario, Dept Surg, Div Gen Surg, London, ON N6A 3K7, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
Wall, William
;
Quan, Douglas
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
Univ Western Ontario, Dept Surg, Div Gen Surg, London, ON N6A 3K7, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
Quan, Douglas
;
Vangala, Sai
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
Vangala, Sai
;
McAlister, Vivian
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
Univ Western Ontario, Dept Surg, Div Gen Surg, London, ON N6A 3K7, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
McAlister, Vivian
;
Marotta, Paul
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
Univ Western Ontario, Div Gastroenterol, London, ON, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
Marotta, Paul
;
Hernandez-Alejandro, Roberto
论文数: 0引用数: 0
h-index: 0
机构:
Univ Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
Univ Western Ontario, Dept Surg, Div Gen Surg, London, ON N6A 3K7, CanadaUniv Western Ontario, Multiorgan Transplant Program, London Hlth Sci Ctr, London, ON, Canada
机构:
Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USAUniv Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
Feng, S
;
Goodrich, NP
论文数: 0引用数: 0
h-index: 0
机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
Goodrich, NP
;
Bragg-Gresham, JL
论文数: 0引用数: 0
h-index: 0
机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
Bragg-Gresham, JL
;
Dykstra, DM
论文数: 0引用数: 0
h-index: 0
机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
Dykstra, DM
;
Punch, JD
论文数: 0引用数: 0
h-index: 0
机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
Punch, JD
;
DebRoy, MA
论文数: 0引用数: 0
h-index: 0
机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
DebRoy, MA
;
Greenstein, SM
论文数: 0引用数: 0
h-index: 0
机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
Greenstein, SM
;
Merion, RM
论文数: 0引用数: 0
h-index: 0
机构:Univ Calif San Francisco, Dept Surg, Div Transplantat, San Francisco, CA 94143 USA
机构:
Univ Penn, Sch Med, Div Transplantat, Penn Transplant Inst,Dept Surg, Philadelphia, PA 19104 USAUniv Penn, Sch Med, Div Transplantat, Penn Transplant Inst,Dept Surg, Philadelphia, PA 19104 USA
Olthoff, Kim M.
;
Kulik, Laura
论文数: 0引用数: 0
h-index: 0
机构:
Northwestern Univ, Dept Med, Chicago, IL 60611 USAUniv Penn, Sch Med, Div Transplantat, Penn Transplant Inst,Dept Surg, Philadelphia, PA 19104 USA
Kulik, Laura
;
Samstein, Benjamin
论文数: 0引用数: 0
h-index: 0
机构:
Columbia Univ, Dept Surg, New York, NY USAUniv Penn, Sch Med, Div Transplantat, Penn Transplant Inst,Dept Surg, Philadelphia, PA 19104 USA
Samstein, Benjamin
;
Kaminski, Mary
论文数: 0引用数: 0
h-index: 0
机构:Univ Penn, Sch Med, Div Transplantat, Penn Transplant Inst,Dept Surg, Philadelphia, PA 19104 USA
Kaminski, Mary
;
Abecassis, Michael
论文数: 0引用数: 0
h-index: 0
机构:
Northwestern Univ, Dept Surg, Chicago, IL 60611 USAUniv Penn, Sch Med, Div Transplantat, Penn Transplant Inst,Dept Surg, Philadelphia, PA 19104 USA
Abecassis, Michael
;
Emond, Jean
论文数: 0引用数: 0
h-index: 0
机构:
Columbia Univ, Dept Surg, New York, NY USAUniv Penn, Sch Med, Div Transplantat, Penn Transplant Inst,Dept Surg, Philadelphia, PA 19104 USA
Emond, Jean
;
Shaked, Abraham
论文数: 0引用数: 0
h-index: 0
机构:Univ Penn, Sch Med, Div Transplantat, Penn Transplant Inst,Dept Surg, Philadelphia, PA 19104 USA
Shaked, Abraham
;
Christie, Jason D.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Penn, Dept Med, Philadelphia, PA 19104 USA
Univ Penn, Dept Epidemiol, Philadelphia, PA 19104 USAUniv Penn, Sch Med, Div Transplantat, Penn Transplant Inst,Dept Surg, Philadelphia, PA 19104 USA