1. CDC. Statistics for Different Kinds of Cancer 2017. https://www.cdc.gov/cancer/dcpc/data/types.htm . Accessed 30 Jan 2018.
2. Siegel RL, Miller KD, Jemal A. Cancer statistics, 2017. CA Cancer J Clin. 2017;67:7–30.
3. Howlader N, Noone A, Krapcho M, Miller D, Bishop K, Kosary C, et al. SEER Cancer Statistics Review, 1975–2014, National Cancer Institute. Bethesda, MD, https://seer.cancer.gov/csr/1975_2014/ , based on November 2016 SEER data submission, posted to the SEER web site, April 2017.
4. NIMHD. NIMHD Research Framework https://www.nimhd.nih.gov/about/overview/research-framework.html . Accessed 31 Jan 2018.
5. Golden SD, Earp JAL. Social ecological approaches to individuals and their contexts: twenty years of health education & behavior health promotion interventions. Health Educ Behav Off Publ Soc Public Health Educ. 2012;39:364–72.