Figure 2From: The Nightingale study: rationale, study design and baseline characteristics of a prospective cohort study on shift work and breast cancer risk among nurses Frequency of self-reported other occupational exposures among 59,947 Nightingale Study participants. Legend: Dark part of bar indicates the proportion of participants who answered ‘yes’ to the following question ‘Have you ever worked with …… regularly for at least 6 months?Back to article page