1. Italian Government Statement from Italy http://apps.who.int/gb/statements/eb142/PDF/22/Italy-3.1.pdf
2. Global kidney exchange: Overcoming the barrier of poverty;Pullen;Am J Transplant,2017
3. Declaration of Istanbul Custodian Group Statement of the Declaration of Istanbul Custodian Group Concerning Ethical Objections to the Proposed Global Kidney Exchange Program 2017 https://www.declarationofistanbul.org/resources/policy-documents/795-statement-of-the-declaration-of-istan-bul-custodian-group-concerning-ethical-objections-to-the-proposed-global-kidney-exchange-program