1. Statistics Netherlands (CBS).Population pyramid. Retrieved from:
https://www.cbs.nl/en-gb/visualisaties/population-pyramid
. Published 16 December 2016. Visited on 05 October 2017.
2. Statistics Netherlands (CBS). Levensverwachting; geslacht, leeftijd (per jaar en periode van vijf jaren). Retrieved from:
http://statline.cbs.nl/StatWeb/publication/?VW=T&DM=SLNL&PA=80416NED&LA=NL
. Published 02 Augustus 2017, visited on 05 October 2017.
3. Statistics Netherlands (CBS). Population; sex, age, origin and generation, 1 January. Retrieved from:
http://statline.cbs.nl/Statweb/publication/?DM=SLNL&PA=7461BEV&D1=0&D2=0&D3=101-120&D4=0
,30,60,66-67&HDR=G3,T&STB=G1,G2&VW=T. Published on 01 august 2017, visited on 05 October 2017.
4. Statistics Netherlands (CBS). Lengte en gewicht van personen, ondergewicht en overgewicht; vanaf 1981. Retrieved from:
http://statline.cbs.nl/Statweb/selection/?VW=T&DM=SLNL&PA=81565NED&D1=0-4&D2=a&D3=0-1%2c5&D4=0&D5=0%2c10%2c20%2c30%2c33-35&HDR=T&STB=G1%2cG2%2cG3%2cG4
. Published on 12 June 2017, visited on 18 October 2017.
5. Gebhart A, Young MT, Nguyen NT. Bariatric surgery in the elderly: 2009–2013. Surg Obes Relat Dis. 2015;11(2):393–8.
https://doi.org/10.1016/j.soard.2014.04.014
.