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Authors
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Funding
Funding for this research was provided by:
Alcon Pharma Germany
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Article History
Received: 2 November 2017
Revised: 2 April 2018
Accepted: 5 April 2018
First Online: 30 April 2018
Compliance with ethical standards
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: The authors declare that they have no conflict of interest.
: 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. The coordinating Independent Ethics Committee (Bavaria) gave unrestricted consent to the investigation design at hand by its vote in 08 / 2011; so did all local Committees subsequently in accordance with this vote.
: Informed consent was obtained from all individual participants included in the study.
