Elder, A. G., O'Donnell, B., McCruden, E. A., Symington, I. S., & Carman, W. F. (1996). Incidence and recall of influenza in a cohort of Glasgow healthcare workers during the 1993-4 epidemic: Results of serum testing and questionnaire. BMJ Group.

Elder, A. G., B. O'Donnell, E. A. McCruden, I. S. Symington, and W. F. Carman. Incidence and Recall of Influenza in a Cohort of Glasgow Healthcare Workers During the 1993-4 Epidemic: Results of Serum Testing and Questionnaire. BMJ Group, 1996.

Elder, A. G., et al. Incidence and Recall of Influenza in a Cohort of Glasgow Healthcare Workers During the 1993-4 Epidemic: Results of Serum Testing and Questionnaire. BMJ Group, 1996.