NORWOOD, Mass.--(BUSINESS WIRE)--Aspect Medical Systems, Inc. (NASDAQ: ASPM) today announced that Boudewijn Bollen will retire from his role as president of international operations during the first quarter of 2008. After this time, Bollen will serve on a part-time basis as a senior company advisor and will remain a member of the board of directors. Bill Floyd, vice president of sales and marketing for Aspect, will work with Bollen throughout a transition period starting in September 2007, and will be promoted to executive vice president of worldwide sales and marketing upon Bollen’s retirement.