GOMA: They survived the bombs and bullets, but many lost an arm or a leg when M23 fighters seized the city of Goma in the eastern Democratic Republic of Congo nearly a year ago. Lying on a rug, David Muhire arduously lifted his thigh as a carer in a white uniform placed weights on it to increase the effort and work the muscles. The 25-year-old’s leg was amputated at the knee — he’s one of the many whose bodies bear the scars of the Rwanda-backed M23’s violent offensive.