Links[1] https://www.ncri.ie/cancers/larynx [2] https://www.ncri.ie/cancers/lung [3] https://www.ncri.ie/cancers/mouth-pharynx [4] https://www.ncri.ie/cancers/oesophagus [5] http://www.ejcancer.com/article/S0959-8049(13)00952-0/abstract