Epidemiologists Morten Frisch and Henrik Brønnum-Hansen argue that Cameron was wrong to infer reduced life expectancy from the fact that deaths among homosexually married partners in Denmark and Norway occurred at a lower median age than those among heterosexually married partners: "Because the age distribution among persons in same-sex marriages was considerably younger than that of people who had ever been heterosexually married, the average age at death among those who actually died during the observation period was, not surprisingly, considerably younger in the population of same-sex married persons." Their own analysis found that excess mortality in Danish same-sex marriages since 1995 was "restricted to the first few years after a marriage, presumably reflecting preexisting illness at the time of marriage". Similarly, critics have argued that obituaries in gay-themed newspapers, which Cameron used to estimate homosexual mortality, do not provide a representative sample of deaths and ignore surviving members of the same generation.