Francis, N. A., Cals, J. W., Butler, C. C., Hood, K., Verheij, T., Little, P., . . . Coenen, S. (2012). Severity assessment for lower respiratory tract infections: Potential use and validity of the CRB-65 in primary care. Prim Care Respir J.

Francis, Nick A., Jochen W. Cals, Christopher C. Butler, Kerenza Hood, Theo Verheij, Paul Little, Herman Goossens, and Samuel Coenen. "Severity Assessment for Lower Respiratory Tract Infections: Potential Use and Validity of the CRB-65 in Primary Care." Prim Care Respir J 2012.

Francis, Nick A., et al. "Severity Assessment for Lower Respiratory Tract Infections: Potential Use and Validity of the CRB-65 in Primary Care." Prim Care Respir J 2012.