Ian C. Read, chairman and chief executive officer of Pfizer, Inc., was elected chairman of the trade association Pharmaceutical Research and Manufacturers of America (PhRMA). Also Kenneth C. Frazier, chairman, president and chief executive officer of Merck & Co., Inc., was named chairman-elect of PhRMA’s board of directors, and George A. Scangos, Ph.D., chief executive officer of Biogen Idec, was named board treasurer.   Mr. Read succeeds Robert J. Hugin, chairman and chief executive officer...