|Taking the Medicine: A Short History of Medicine's Beautiful Idea, and Our Difficulty Swallowing It||The Cochrane database of systematic reviews|
|"Abuse of Medications That Theoretically Are Without Abuse Potential"||"Over-the-counter OTC medications for acute cough in children and adults in community settings"|
Knut Schroeder; Tom Fahey 2002.9
|"Interventions for cough in cancer"||Medicines and Healthcare products Regulatory Agency|
|The Cochrane database of systematic reviews||"Therapeutic options for acute cough due to upper respiratory infections in children"|
Cochrane Database Syst Rev 2 : CD001364.