3. Marsh, G.M., et al., An updated re-analysis of the mortality risk from nasopharyngeal cancer in the National Cancer Institute formaldehyde worker cohort study. J Occup Med Toxicol, 2016. 11: p. 8.

4. Beane Freeman, L.E., et al., Mortality from lymphohematopoietic malignancies among workers in formaldehyde industries: the National Cancer Institute Cohort. J Natl Cancer Inst, 2009. 101(10): p. 751-61.

5. Hauptmann, M., et al., Mortality from lymphohematopoietic malignancies and brain cancer among embalmers exposed to formaldehyde. J Natl Cancer Inst, 2009. 101(24): p. 1696-708.

6. Kaden DA, Mandin C, Nielsen GD, et al. Formaldehyde. In: WHO Guidelines for Indoor Air Quality: Selected Pollutants. Geneva: World Health Organization; 2010. 3. Available from: https://www.ncbi.nlm.nih.gov/books/NBK138711/