Anne Marie Morales: I wanted to go where few doctors dared to go. I also felt I was ready and, as always, my parents, brothers, and friends supported me, so here I am at the Doro refugee camp in Maban, South Sudan. They run barefoot on the hot sand paths, oblivious to the dangers of scorpions and poisonous snakes. Mud floors are their sleeping quarters. They live in tents with no electricity. Night duty is always sleepless. We have an assigned tent to rest in, but ever since a thief stole our mattress, we stay away.