Retraction Note to: Inhaled tiotropium to prevent postoperative cardiopulmonary complications in patients with newly diagnosed chronic obstructive pulmonary disease requiring lung cancer surgery

Retraction Note to: Surg Today (2014) 44:285–290 https://doi.org/10.1007/s00595-012-0481-5

The Editor-in-Chief has retracted this article at the request of the corresponding author because concerns have been raised about the reliability of the presented data. An institutional investigation by Osaka University’s investigation committee has found that:

• The results as presented in Figs. 1 and 2 could not be replicated from the available data.

• The conclusion of the study that "the low frequency of postoperative cardiopulmonary complications in lung cancer patients with chronic obstructive pulmonary disease (COPD) is due to the administration of tiotropium" was not supported by the data in existing patient medical records.

The corresponding author has stated that he accepts full responsibility for inputting the incorrect data. The inspection committee of Osaka University has concluded that the co-authors are not responsible for these errors, since they appear not to have been aware of the inconsistencies in the data.

All authors agree to this retraction.