- Author: John D Firth, Siraj A Misbah, Royal College of Physicians of London. Education Department
- Language: English
- Year: 2008
- Author: John D Firth, Royal College of Physicians of London. Education Department
- Language: English
- Year: 2008
- Author: John D Firth, Emma H Baker, Royal College of Physicians of London
- Language: English
- Year: 2008
- Author: Royal College of Physicians of London. Tobacco Advisory Group., Royal College of Physicians of London
- Language: English
- Year: 2010
- Author: Nick Ward, John D Firth, Vincent Kirchner, Royal College of Physicians of London. Education Department
- Language: English
- Year: 2008
- Author: David W Galvani, Mark Bower, Royal College of Physicians of London. Education Department
- Language: English
- Year: 2008
- Author: John D Firth, Patrick H Maxwell, Royal College of Physicians of London. Education Department
- Language: English
- Year: 2008
- Author: Karen Harman, Martin J Wiselka, John D Firth, Royal College of Physicians of London. Education Department
- Language: English
- Year: 2008
- Author: Royal College of Physicians of London
- Language: English
- Year: 2007
- Author: Satish Keshav, John D Firth, Royal College of Physicians of London. Education Department
- Language: English
- Year: 2008