1. Cancer Registry and Statistics. Cancer Information Service, National Cancer Center, Japan.
http://ganjoho.jp/reg_stat/index.html
. (1st Sep 2017, date last accessed). (in Japanese)
2. Katanoda K, Shibata A, Matsuda T et al (2017) Childhood, adolescent and young adult cancer incidence in Japan in 2009–2011. Jpn J Clin Oncol 47:762–771
3. The Health, Labor and Welfare Ministry of Japan (2017) Annual Population Statistics.
http://www.mhlw.go.jp/toukei/saikin/hw/jinkou/geppo/nengai15/index.html
. (1st Sep 2017, date last accessed). (in Japanese)
4. Barr RD, Ferrari A, Ries L et al (2016) Cancer in adolescents and young adults. A narrative review of the current status and a view of the future. JAMA Pediatr 170:495–501
5. Department of Health and Human Services, National Institutes of Health, National Cancer Institute, LIVESTRONG Young Adult Alliance (2006) Closing the gap: research and care imperatives for adolescents and young adults with cancer: a report of the Adolescent and Young Adult Oncology Progress Review Group. NIH Publication.
https://www.cancer.gov/types/aya/research/ayao-august-2006.pdf
(1st Sep 2017, date last accessed)