Briel, M., Young, J., Tschudi, P., E. Hersberger, K., Hugenschmidt, C., Langewitz, W. and C. Bucher, H. (2006) “Prevalence and influence of diagnostic tests for acute respiratory tract infections in primary care”, Swiss Medical Weekly, 136(1516), pp. 248–253. doi: 10.4414/smw.2006.11343.