International Society of Psychoneuroendocrinology (ISPNE) 

“The excellent facilities of the LUMC, an outstanding organisation (Boerhaave Congress Service), and the magnificent ambiance of the Pieterskerk have left a lasting impression on all of our visitors. The overall enthusiasm was endorsed by the American board of the Society, which proved that Leiden’s authenticity, warm atmosphere and excellent facilities enabled the city to amply measure up in appreciation compared to the competition with other congress locations such as the likes of Manhattan, NYC.”

Victor Kallen, ISPNE congres 2013