CHOIR: Center for Healthcare Operations Improvement and Research in the Netherlands
ORAHS: European Working group on Operational Research Applied to Health Services
EURO: Association of European Operational Research Societies
EURO 2012: The XXV EURO Conference on the subject "OR - connecting sciences" will be organized in Vilnius, July 8-11 2012, by the Lithuanian OR Society.
P&OM 2012: The 4th Production and Operations Management World Conference will be held in Amsterdam, July 2-4 2012.