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Authors
Boerboom, Abel https://orcid.org/0000-0002-9870-2478
Aarts, Edo
Lange, Volker
Plamper, Andreas
Rheinwalt, Karl
Linke, Katja
Peterli, Ralph
Berends, Frits
Hazebroek, Eric
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Article History
First Online: 2 January 2020
Compliance with ethical standards
: The protocol of this retrospective study was approved by the local research committees of all four participating centers and this study was conducted in accordance with the 1964 Declaration of Helsinki and its later amendments. All patients’ data were collected retrospectively from medical records or from a prospective database by an investigator in the participating center after informed consent was obtained.
