On page 264 (column 2, paragraph 2, lines 14–18) the text:
A different Swedish study reported decreased pre- and post-menopausal breast cancer incidence compared with the background population of Sweden (RR 0·54 (95% CI 0·43, 0·68)(9). Further follow up may help to clarify these divergent results.
should read
A different Swedish study reported decreased pre- and post-menopausal breast cancer incidence compared with the background population of Sweden (RR 0·54 (95% CI 0·43, 0·68) at the time of bariatric surgery. However the standardised incidence ratio for breast cancer did not decrease with time after obesity surgery (P=0·60)(9), thus suggesting rates were not reduced by weight loss after bariatric surgery. Further follow up may help to clarify these divergent results.