Acknowledgements
Recommended reference:
Pukkala, E., Söderman, B., Okeanov, A., Storm, H., Rahu, M., Hakulinen, T., Becker, N., Stabenow, R., Bjarnadottir, K., Stengrevics, A., Gurevicius, R., Glattre, E., Zatonski, W., Men, T. and Barlow, L.: Cancer atlas of Northern Europe. Cancer Society of Finland, Publication No. 62, Helsinki 2001.