Pharmaceutical QPS Holdings, a US full-service GLP/GCP-compliant contract research organization providing testing services to support preclinical and clinical research and development, has completed its acquisition of Xendo Drug Development BV, headquartered in Groningen, the Netherlands. XDD, a European contract research organization (CRO), will be known as QPS Netherlands BV and become a wholly-owned subsidiary of QPS Holdings. 28 July 2010