This study led to a great increase in interest in the link between shiftwork and cancer. Co-author Johnni Hansen’s influential studies linking breast cancer and long years of night shift work led to compensation for workers in Denmark. This later research  strengthened the link, especially for women working in the health sector where some of the most disruptive shifts have been worked. Another 2012 Hansen study linked night work to an increased breast cancer risk in women in the Danish military.

Johnni Hansen and Richard Stevens. Case-control study of shift-work and breast cancer risk in Danish nurses: Impact of shift systems, European Journal of Cancer, volume 48.11, pages 1722-1729, July 2012.