1. INE Web page. (cited January 2017): Health statistics 2013. Lisboa: Statistics Portugal (2015). Portuguese version.
https://www.ine.pt/xportal/xmain?xpid=INE&xpgid=ine_publicacoes&PUBLICACOESpub_boui=138737&PUBLICACOESmodo=2&xlang=pt
2. INE Web page. (cited January 2017): Health statistics 2014. Lisboa: Statistics Portugal (2016). Portuguese version.
https://www.ine.pt/xportal/xmain?xpid=INE&xpgid=ine_publicacoes&PUBLICACOESpub_boui=257402707&PUBLICACOEStema=00&PUBLICACOESmodo=2
3. INE Web page. (cited January 2017): Health statistics 2015. Lisboa: Statistics Portugal (2017). Portuguese version.
https://www.ine.pt/xportal/xmain?xpid=INE&xpgid=ine_publicacoes&PUBLICACOESpub_boui=257779974&PUBLICACOEStema=00&PUBLICACOESmodo=2
4. Redondeiro, M.: O quotidiano hospitalar da criança: constrangimentos e possibilidades de desenvolvimento, Master thesis in Sociology of hildhood Universidade do Minho, Braga, Portugal (2003).
http://hdl.handle.net/1822/7992
5. Blom, G.E.: The reactions of hospitalized children to illness. Pediatrics 22(3), 590–600 (1958)