EMERGING MARKETS-Latam stocks fall on oil prices, company results

(Rewrites to add afternoon prices) By Bruno Federowski SAO PAULO, July 28 (Reuters) - Most Latin American stock markets fell slightly on Thursday after a dip in oil prices and after the U.S. Federal Reserve left the door open to raising rates this year. Oil prices fell nearly 2 percent, hitting April lows while U.S. crude headed for its biggest monthly loss in a year. The Federal Reserve left interest rates unchanged on Wednesday but policy makers appeared less worried about