LONDON (Reuters) - Equity markets slipped on Thursday on concerns about the long-term impact of the new coronavirus and simmering U.S.-China tensions, though those worries couldn't stop oil prices from marching to a 2-1/2 month high.The London , Frankfurt and Paris bourses and Wall Street futures were 0.5%-1.3% lower ahead of U.S. trading, while the dollar seemed to be backsliding again having earlier appeared to have snapped a four-day losing run. [/FRX]It was also a big day for data and..