Correction

It has come to the authors’ attention that there is an error in (http://doi.org/10.5334/gh.1040) [] which needs to be corrected. In the ‘Complications due to coronary interventions’ section, it is stated that:

‘The rate of serious complications due to the coronary intervention was 0.04% in the CR group and 0.09% in the IR group.’

However, 0.04 and 0.09 are quotients and not percentages. Instead, as stated correctly in Supplementary Table 6 of the original article, it should be written:

‘The rate of serious complications due to the coronary intervention was 4.3% in the CR group and 9.7% in the IR group.’