1. Centers for Disease Control and Prevention. Smoking and tobacco use. 2013. www.cdc.gov/tobacco/data_statistics/fact_sheets/adult_data/cig_smoking/index.htm. Accessed February 25, 2015.
2. American Society for Reproductive Medicine. Smoking and infertility. 2014. www.reproductivefacts.org/uploadedFiles/ASRM_Content/Resources/Patient_Resources/Fact_Sheets_and_Info_Booklets/smoking.pdf. Accessed January 31, 2015.
3. Nicotine and cotinine in the cervical mucus of smokers, passive smokers, and nonsmokers;McCann;Cancer Epidemiol Biomarkers Prev,1992
4. Up-regulation of Vascular Endothelial Growth Factor-C by Nicotine in Cervical Cancer Cell Lines