Caring for people with chronic conditions
World Health Organization.
http://www.euro.who.int/__data/assets/pdf_file/0006/96468/E91878.pdf
Improving health for the world's poor: What can health professionals do?
British Medical Association, 2007.
http://www.bma.org.uk/sc/international/globalhealth/Improvinghealth.jsp
Patient tool for calculating cost of smoking
American Lung Association.
www.lungs.org/cos.htm
Surgeon General of the US Public Health Service reports
http://www.surgeongeneral.gov/library/
