she's come to work the day shift with head nurse trine de la cruz. trine looks after the most critically ill patients in the hospital. but trine also has to deal with another group of patients, because on this floor is the prison ward. constantly locked and guarded by armed police. >> what kind of criminals are in there, what have they done? >> with patients like these, the nurses have to take precautions. >> well, it's just mad that they've got a jail on the ward. really bizarre; you know, having to cover your name and your face at work... i would... i'd just say "no, that's not in my job description"... not at all. >> doctors and nurses are seen as wealthy and are a prime target for kidnappers. many have been held for ransom and even murdered. hundreds of medical staff have fled the city, leaving more than a third of the clinics and hospitals abandoned. it's part of an exodus that has seen a quarter of a million people flee juarez since the violence began. >> i can't imagine being threatened. you're not involved, you're just looking after people. >>