de Jong, Mark H. http://orcid.org/0000-0002-9719-5697
Wierdsma, André I.
Van Gool, Arthur R.
Mulder, Cornelis L.
Article History
Received: 30 April 2019
Accepted: 30 July 2019
First Online: 5 August 2019
Ethics approval and consent to participate
: This study was approved by the Medical Ethics Committee at Leiden University Medical Centre (reference number: C15.092) and was conducted in accordance with the ethical standards of the Declaration of Helsinki.All participants signed the informed consent form prior to inclusion.As the control patients were not subjected to any assessment or study intervention, and as all patient-related data were carefully anonymized, the medical ethics committee waived their obligation of informed consent.
: Not applicable.
: The authors declare that they have no competing interests.