1. World Health Organization (2015) World report on ageing and health
http://apps.who.int/iris/bitstream/10665/186463/1/9789240694811_eng.pdf
. Accessed 30 May 2017
2. Ferlay J, Soerjomataram I, Ervik M, Dikshit R, Eser S, Mathers C et al (2012) Cancer incidence and mortality worldwide: IARC CancerBase No. 11. International Agency for Research on Cancer, Lyon, France
http://globocan.iarc.fr/Pages/fact_sheets_cancer.aspx
. Accessed 30 May 2017
3. World Health Organization (2017) Fact sheets on cancer
http://www.who.int/mediacentre/factsheets/fs297/en/
. Accessed 30 May 2017
4. Trijsbug RW, Van Knippenberg FC, Rijpma SE (1992) Effects of psychological treatment on cancer patients: a critical review. Psychosom Med 54:489–512
5. Kelly B, McClement S, Chochinov HM (2006) Measurement of psychological distress in palliative care. Palliat Med 20:79–89.
https://doi.org/10.1177/0269216306072347