LONDON (Reuters) -At least three people including a child were killed and 18 injured on Monday in a Ukrainian artillery attack at a market in the Russian-backed separatist Ukrainian region of Donetsk, officials in the province said. The Donetsk News Agency showed pictures of burning stalls at the central Maisky market and several bodies on the ground. The news agency said 155-mm calibre NATO-standard artillery munitions hit parts of the region on Monday. “We had a hit to the market – there were many people here,” Yan Gagin, an adviser to the separatists’ self-styled government, told RIA news a…