Ionising Radiation & Risk of Death from Leukaemia & Lymphoma in Radiation-Monitored Workers (INWORKS): an International Cohort Study

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Ionising radiation and risk of death from leukaemia and lymphoma in radiation-monitored workers (INWORKS): an international cohort study, Lancet Haematol 2015;  2: e276–81 Leuraud et al., p. 1
Ionising radiation and risk of death from leukaemia and lymphoma in radiation-monitored workers (INWORKS): an international cohort study, Lancet Haematol 2015;  2: e276–81 Leuraud et al., p. 2
Ionising radiation and risk of death from leukaemia and lymphoma in radiation-monitored workers (INWORKS): an international cohort study, Lancet Haematol 2015;  2: e276–81 Leuraud et al., p. 3
Ionising radiation and risk of death from leukaemia and lymphoma in radiation-monitored workers (INWORKS): an international cohort study, Lancet Haematol 2015;  2: e276–81 Leuraud et al.. p 4
Ionising radiation and risk of death from leukaemia and lymphoma in radiation-monitored workers (INWORKS): an international cohort study, Lancet Haematol 2015;  2: e276–81 Leuraud et al., p. 5
Ionising radiation and risk of death from leukaemia and lymphoma in radiation-monitored workers (INWORKS): an international cohort study, Lancet Haematol 2015;  2: e276–81 Leuraud et al., p. 6 Original pdf found here: http://www.thelancet.com/journals/lanhae/article/PIIS2352-3026%2815%2900094-0/fulltext
NB: This study is about mortality (deaths) and not morbidity (incidence of disease). Not all cases of leukemia are fatal. So, morbidity would almost certainly be higher. As they point out, since this is external radiation with a weighting factor of one, Gy may be expressed in Sieverts (Sv). Therefore average (mean) annual exposure was only 1.1 mSv. [It appears that the flying dot is a decimal and does not mean to multiply]. 1 mSv is often proposed as exposure-level for individuals in the general population, due to the nuclear industry. US Nuclear workers, and others working with ionizing radiation, are allowed 50 mSv per year exposure and ICRP recommends 20 mSv per year for workers (100 mSv averaged over 5 years). The mean is the arithmetic average. The median is half above and half below. 1 Gy is 1000 mGy and in this context…

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