With interest, we read the article by Gustavsson et al1 on the breast cancer risk in a cohort with night work. The authors started from two facts: first, ‘night shift work’2 3 was classified as ‘probably carcinogenic to humans’ (group 2A) by the International Agency for Research on Cancer (IARC); second, the evidence in humans was considered limited because of variable results and potential bias. Since prior studies had problems regarding exposure assessment, Gustavsson et al emphasised their very detailed registry-based data on night work. Yet, as key result the authors noted that ‘conclusions are …
Language: en
LA - en SN - 1351-0711 UR - http://dx.doi.org/10.1136/oemed-2023-109215 ID - ref1 ER -