Retraction Retraction dated 2021-07-27

Click to view Retraction: https://doi.org/10.1007/s00404-021-06152-1

Retraction Retraction dated 2021-07-27

Click to view Retraction: https://doi.org/10.1007/s00404-021-06152-1

Updates are available Expression of concern dated 2020-05-27

Click to view Expression of concern: https://doi.org/10.1007/s00404-015-3767-1