Molassiotis A, Bailey, C, Caress, A, Brunton, L, Smith, J (8 September 2010). Molassiotis A (ed.). "Interventions for cough in cancer". The Cochrane Database of Systematic Reviews (9) CD007881. doi:10.1002/14651858.CD007881.pub2. PMID20824870.
Molassiotis A, Bailey, C, Caress, A, Brunton, L, Smith, J (8 September 2010). Molassiotis A (ed.). "Interventions for cough in cancer". The Cochrane Database of Systematic Reviews (9) CD007881. doi:10.1002/14651858.CD007881.pub2. PMID20824870.