Doctor Goddy Efula and nurse Fabienne Gaborieau working in a Medecins Sans Frontieres (MSF) clinic at the refugee camp in Tine. They are looking at the X-rays of Zenaba Ahamat (30), who was injured in an aerial bombardment by Sudanese government forces. Thousands of refugees from Darfur province in Sudan have fled to Chad to escape attacks by Arab militias allied to the Sudanese government.