UPDATE 1-Wall St Week Ahead-Doubts increase that Q1 will be earnings low point

As Wall Street braces for what may be the first U.S. profit decline since 2016, investors say the first quarter may not mark the low point for 2019 earnings. In the immediate term, markets could be roiled depending on what or if any information is released from Special Counsel Robert Mueller's report on his investigation into Russia's role in the 2016 presidential election, w