1. 1. Hori M, Tanaka H, Wakai K, Sasazuki S & Katanoda K (2016): Secondhand smoke exposure and risk of lung cancer in Japan: a systematic review and meta-analysis of epidemiologic studies. Jpn J Clin Oncol 46: 942−951
2. 2. International Agency for Research on Cancer (2007): Some tobacco-specific n-nitrosamines. In: Smokeless tobacco and some tobacco-specific n-nitrosamines. IARC monographs on the evaluation of carcinogenic risks to humans 89. IARC, Lyon pp 421−583
3. 3. Cooperation Centre for Scientific Research Relative to Tobacco (CORESTA) (2013): Reference products used in tobacco and smoke analyses. Tob J Int 2013(2): 150−154
4. 4. International Organization for Standardization (ISO) (1999): Tobacco and tobacco products-atmosphere for conditioning and testing. ISO 3402, Geneva pp 1−3
5. 5. World Health Organization (WHO) (2012): Standard operating procedure for intense smoking of cigarettes. WHO Tobacco Laboratory Network (TobLabNet) Official Method SOP 01. WHO, Geneva pp 1−7