Comment on

• Cancer risk after renal transplantation in the Nordic countries, 1964-1986.

  Birkeland SA, Storm HH, Lamm LU, Barlow L, Blohmé I, Forsberg B, Eklund B, Fjeldborg O, Friedberg M, Frödin L, et al. Birkeland SA, et al. Int J Cancer. 1995 Jan 17;60(2):183-9. doi: 10.1002/ijc.2910600209. Int J Cancer. 1995. PMID: 7829213
• Widowhood and divorce related to cancer risk in middle-aged women. A nested case-control study among Norwegian women born between 1935 and 1954.

  Kvikstad A, Vatten LJ, Tretli S, Kvinnsland S. Kvikstad A, et al. Int J Cancer. 1994 Aug 15;58(4):512-6. doi: 10.1002/ijc.2910580410. Int J Cancer. 1994. PMID: 8056447
• Breast cancer risk in women who have had children with different partners.

  Lambe M, Rossing MA, Wuu J, Hsieh C. Lambe M, et al. Int J Cancer. 2001 Sep;93(6):907-10. doi: 10.1002/ijc.1414. Int J Cancer. 2001. PMID: 11519056
• Familial colorectal adenocarcinoma from the Swedish Family-Cancer Database.

  Hemminki K, Li X. Hemminki K, et al. Int J Cancer. 2001 Dec 1;94(5):743-8. doi: 10.1002/ijc.1533. Int J Cancer. 2001. PMID: 11745471