We congratulate Xin, on passing her viva with minor corrections, for her PhD thesis on “Computing Balanced Solutions for International Kidney Exchange Schemes”. The thesis is based on work published in AAMAS, Autonomous Agents and Multi-Agent Systems, and the Journal of Artificial Intelligence Research. She was supervised by Daniel Paulusma and Matthew Johnson. Thanks are also due to George Mertzios and Bart Smeulders (Eindhoven) for being the two examiners.