1. 1) IARC Monographs on the Evaluation of Carcinogenic Risks to Humans (2004) Tobacco Smoke and Involuntary Smoking, vol. 83, WHO IARC, Lyon, France.
2. 2) Ministry of Finance (1989) Method for determining tar and nicotine yields of cigarette smoke. Notification No.174 of the Ministry of Finance (last amendment on 13 Nov. 2003 Notification No.667 of the Ministry of Finance) (in Japanese).
3. 3) WHO (2001) Final report: Advancing knowledge on regulating tobacco products, Oslo Norway, 9-10 Feb 2003, Geneva: World Health Organization.
4. 4) Health Canada (1999) Determination of “Tar”, Nicotine and Carbon Monoxide in Mainstream Tobacco Smoke. Health Canada Test Method T-115, pp. 17, Available at http://www.hc-sc.gc.ca/hl-vs/tobac-tabac/legislation/reg/indust/method/_sidesecond/nicotine_e.html
5. 5) WHO Tobacco Laboratory Network (TobLab-Net). Available at http://www.who.int/tobacco/global_interaction/toblabnet/en/index.html