- Molecular epidemiology of nalidixic acid-resistant campylobacter isolates from humans and poultry by pulsed-field gel electrophoresis and flagellin gene analysis. Wu, T.L., Su, L.H., Chia, J.H., Kao, T.M., Chiu, C.H., Kuo, A.J., Sun, C.F. Epidemiol. Infect. (2002)