Peer-Reviewed Publication Improvement in serological diagnosis of pertussis by external quality assessment Jan 2019 - J Med Microbiol - 68(5):741-747 Markey, K., Douglas-Bardsley, A., Asokanathan, C., Fry, N.K., Barkoff, A.-M., Bacci, S., Ködmön, C., He, Q. Immunisation Microbiology Pertussis Prevention and control Surveillance Training