The Danish Head and Neck Cancer Group (DAHANCA) 2020 radiotherapy guidelines

The Danish Head and Neck Cancer Group (DAHANCA) was founded in 1976. Over the years the group successfully conducted clinical trials and has developed national guidelines for all aspects of the treatment of head and neck cancer. The first national recommendations for radiotherapy was included as an appendix to the DAHANCA 2 and DAHANCA 5 protocols [1,2] in 1979 and 1986, respectively. A thorough description of doses and treatment fields were in 1991 included in the large DAHANCA 6&7 randomized trial [3] and later in the DAHANCA 9 protocol [4].