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National Cancer Institute. Fertility Issues in Boys and Men with Cancer. 09/22/2017. Accessed at www.cancer.gov/about-cancer/treatment/side-effects/fertility-men on May 7, 2018.
National Comprehensive Cancer Network, Clinical Practice Guidelines in Oncology (NCCN Guidelines?), Testicular Cancer, Version 2.2018 -- February 16, 2018. Accessed at www.nccn.org/professionals/physician_gls/pdf/testicular.pdf on May 7, 2018.