BOSTON, Massachusetts, April 20 -- Nutter, a law firm, issued the following news release: Nutter advised Complete Health Economics Outcomes Research Solutions ("CHEORS"), a leading provider of health economics and outcomes research (HEOR) and market access services across the pharmaceutical, biotechnology, and medical device industries, in connection with its acquisition by PharmAlliance, a diversified pharmaceutical and life sciences services platform. PharmAlliance is a portfolio company of W more PR