@article {820, editor = {,}, title = {Retraction}, volume = {99}, number = {11}, pages = {820--820}, year = {2013}, doi = {10.1136/heartjnl-2011-301156.29ret}, publisher = {BMJ Publishing Group Ltd}, issn = {1355-6037}, URL = {https://heart.bmj.com/content/99/11/820.1}, eprint = {https://heart.bmj.com/content/99/11/820.1.full.pdf}, journal = {Heart} }