New Challenges in Multihospital Kidney Exchange
研究了肾脏交换清算所面临的新挑战，即移植中心可能只提交难配对的医患对，而将易配对的留在本地移植，从而减少整体移植数量，并探讨了激励医院参与全部配对的机制及长链非同时非定向捐赠链的重要性。
The growth of kidney exchange presents new challenges for the design of kidney exchange clearinghouses. The players now include directors of transplant centers, who see sets of patient-donor pairs, and can choose to reveal only difficult-to-match pairs to the clearinghouse, while withholding easy-to-match pairs to transplant locally. This reduces the number of transplants. We discuss how the incentives for hospitals to enroll all pairs in kidney exchange can be achieved, and how the concentration of hard to match pairs increases the importance of long, non-simultaneous nondirected donor chains.