Jack Katzanek, Press-Enterprise, April 3, 2008 More than 800 nurses who have specialty jobs at Southern California's Kaiser Permanente hospitals could walk off their jobs for five days starting Monday in a dispute over failed contract talks, a union representative said. The group includes 83 nurses at Kaiser Permanente's Fontana Medical Center and its sister hospital in Ontario and 65 at the hospital in Riverside, representatives of the medical group said Thursday. These registered nurses, called "specialty practice units," do behind-the-scenes work that include evaluations for admitting and discharges, case management and midwife work in delivery rooms. ... Kaiser