Ahmed Hussein was one of a group of volunteer doctors who accompanied the first demonstrations against Mubarak last year. Aware that the injured during anti-regime protests are often arrested at hospitals, they came prepared with medical supplies to provide treatment on the spot. Since then, doctors have set up emergency clinics in streets, mosques and churches to attend to those wounded in clashes. The Tahrir Doctors Association, and their stocks of donated medicines, deploy wherever violence erupts.