Civilians in Sudan have suffered horrendous levels of violence during more than a year of conflict between the army and a rival paramilitary force, facing repeated attacks, abuse and exploitation by both sides, the aid group Medecins Sans Frontieres (Doctors Without Borders – MSF) said on Monday. The physical and mental wounds of violence have been exacerbated by the collapse of the health system and the lack of aninternational humanitarian response, MSF said in a report. Its teams had treated thousands of war wounded in areas affected by bombing, shelling of residential homes and essential in…