Balling, Horst http://orcid.org/0000-0001-6750-9213
Article History
Received: 4 April 2018
First Online: 7 July 2018
Compliance with ethical standards
:
: The author declares that he has no conflict of interest. The author declares that he has full control of all primary data and that he allows the journal to review his data if requested.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. This article does not contain any studies with animals performed by any of the authors.
: Informed consent was obtained from all individual participants included in the study.
: The devices (O-arm, StealthStation S7) are FDA-approved or approved by corresponding national agency for this indication.